<?xml version="1.0" encoding="utf-8"?>
<linkbase xmlns="http://www.xbrl.org/2003/linkbase" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:xbrldt="http://xbrl.org/2005/xbrldt">
  <!-- INTEGIX by Ez-XBRL -->
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#DocumentAndEntityInformation" roleURI="http://www.asanko.com/role/DocumentAndEntityInformation"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#StockholdersEquity" roleURI="http://www.asanko.com/role/StockholdersEquity"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#CommitmentsAndContingencies" roleURI="http://www.asanko.com/role/CommitmentsAndContingencies"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#NotesToFinancialStatementsDisclosureOfCashFlowStatementExplanatoryTextBlock" roleURI="http://www.asanko.com/role/NotesToFinancialStatementsDisclosureOfCashFlowStatementExplanatoryTextBlock"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#NotesToFinancialStatementsDisclosureOfFinancialRiskManagementExplanatoryTextBlock" roleURI="http://www.asanko.com/role/NotesToFinancialStatementsDisclosureOfFinancialRiskManagementExplanatoryTextBlock"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#NotesToFinancialStatementsDisclosureOfRelatedPartyExplanatoryTextBlock" roleURI="http://www.asanko.com/role/NotesToFinancialStatementsDisclosureOfRelatedPartyExplanatoryTextBlock"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#InvestmentinJointVentureTables" roleURI="http://www.asanko.com/role/InvestmentinJointVentureTables"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#NotesToFinancialStatementsDisclosureOfEarningsPerShareExplanatoryTextBlockTables" roleURI="http://www.asanko.com/role/NotesToFinancialStatementsDisclosureOfEarningsPerShareExplanatoryTextBlockTables"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#NotesToFinancialStatementsDisclosureOfMineralPropertiesPlantAndEquipmentAndExplorationAndEvaluationAssetsExplanatoryTextBlockTables" roleURI="http://www.asanko.com/role/NotesToFinancialStatementsDisclosureOfMineralPropertiesPlantAndEquipmentAndExplorationAndEvaluationAssetsExplanatoryTextBlockTables"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#CommitmentsAndContingenciesTables" roleURI="http://www.asanko.com/role/CommitmentsAndContingenciesTables"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#NotesToFinancialStatementsDisclosureOfCashFlowStatementExplanatoryTextBlockTables" roleURI="http://www.asanko.com/role/NotesToFinancialStatementsDisclosureOfCashFlowStatementExplanatoryTextBlockTables"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#NotesToFinancialStatementsDisclosureOfFairValueOfFinancialInstrumentsExplanatoryTextBlockTables" roleURI="http://www.asanko.com/role/NotesToFinancialStatementsDisclosureOfFairValueOfFinancialInstrumentsExplanatoryTextBlockTables"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#Notestofinancialstatementsdisclosureofrelatedpartyexplanatorytextblocktables" roleURI="http://www.asanko.com/role/Notestofinancialstatementsdisclosureofrelatedpartyexplanatorytextblocktables"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#NatureOfOperationsNarrativeDetails" roleURI="http://www.asanko.com/role/NatureOfOperationsNarrativeDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#EarningsLossPerShareAttributableToCommonShareholdersNarrativeDetails" roleURI="http://www.asanko.com/role/EarningsLossPerShareAttributableToCommonShareholdersNarrativeDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#FinancialAssetsNarrativeDetails" roleURI="http://www.asanko.com/role/FinancialAssetsNarrativeDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#DisclosureDisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatoryDetails" roleURI="http://www.asanko.com/role/DisclosureDisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatoryDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#DisclosureDisclosureOfCommitmentsExplanatoryDetails" roleURI="http://www.asanko.com/role/DisclosureDisclosureOfCommitmentsExplanatoryDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#InvestmentinJointVentureDetails" roleURI="http://www.asanko.com/role/InvestmentinJointVentureDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#DisclosureDisclosureOfFinancialRiskManagementExplanatoryDetails" roleURI="http://www.asanko.com/role/DisclosureDisclosureOfFinancialRiskManagementExplanatoryDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#DisclosureDisclosureOfFairValueOfFinancialInstrumentsExplanatoryDetails" roleURI="http://www.asanko.com/role/DisclosureDisclosureOfFairValueOfFinancialInstrumentsExplanatoryDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#DisclosureDisclosureOfSignificantInvestmentsInSubsidiariesExplanatoryDetails" roleURI="http://www.asanko.com/role/DisclosureDisclosureOfSignificantInvestmentsInSubsidiariesExplanatoryDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#DisclosureDisclosureOfDetailedInformationAboutEstimatedUsefulLifeOrDepreciationRateExplanatoryDetails" roleURI="http://www.asanko.com/role/DisclosureDisclosureOfDetailedInformationAboutEstimatedUsefulLifeOrDepreciationRateExplanatoryDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#DisclosureDisclosureOfDeferredTaxesExplanatoryDetails" roleURI="http://www.asanko.com/role/DisclosureDisclosureOfDeferredTaxesExplanatoryDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#DisclosureDisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatoryDetails" roleURI="http://www.asanko.com/role/DisclosureDisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatoryDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#DisclosureOfDetailedInformatonAboutRedeemablePreferenceSharesWithNoFixedRedemptionDateDetails" roleURI="http://www.asanko.com/role/DisclosureOfDetailedInformatonAboutRedeemablePreferenceSharesWithNoFixedRedemptionDateDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#DisclosureDisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsExplanatoryDetails" roleURI="http://www.asanko.com/role/DisclosureDisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsExplanatoryDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#DisclosureDisclosureOfDetailedInformationAboutCommitmentsExplanatoryTableTextBlockDetails" roleURI="http://www.asanko.com/role/DisclosureDisclosureOfDetailedInformationAboutCommitmentsExplanatoryTableTextBlockDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#DisclosureOfDetailedInformationAboutInvestmentInJointVentureUsingEquityMethodDetails" roleURI="http://www.asanko.com/role/DisclosureOfDetailedInformationAboutInvestmentInJointVentureUsingEquityMethodDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#DisclosureOfDetailedInformationAboutStatementOfOperationsOfJointVentureDetails" roleURI="http://www.asanko.com/role/DisclosureOfDetailedInformationAboutStatementOfOperationsOfJointVentureDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#DisclosureOfDetailedInformationAboutProductionCostsOfJointVentureDetails" roleURI="http://www.asanko.com/role/DisclosureOfDetailedInformationAboutProductionCostsOfJointVentureDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#DisclosureOfDetailedInformationAboutAfterTaxAmountRecognizedInRecordsOfAgmOfJointVentureDetails" roleURI="http://www.asanko.com/role/DisclosureOfDetailedInformationAboutAfterTaxAmountRecognizedInRecordsOfAgmOfJointVentureDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#InvestmentinJointVentureDetails1" roleURI="http://www.asanko.com/role/InvestmentinJointVentureDetails1"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#InvestmentinJointVentureDetails2" roleURI="http://www.asanko.com/role/InvestmentinJointVentureDetails2"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#InvestmentinJointVentureDetails3" roleURI="http://www.asanko.com/role/InvestmentinJointVentureDetails3"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#InvestmentinJointVentureDetails4" roleURI="http://www.asanko.com/role/InvestmentinJointVentureDetails4"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#DisclosureDisclosureOfGeographicAllocationOfTotalAssetsAndLiabilitiesExplanatoryTableTextBlockDetails" roleURI="http://www.asanko.com/role/DisclosureDisclosureOfGeographicAllocationOfTotalAssetsAndLiabilitiesExplanatoryTableTextBlockDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#DisclosureDisclosureOfGeographicAllocationOfTheStatementOfOperationsAndComprehensiveIncomeLossExplanatoryTableTextBlockDetails" roleURI="http://www.asanko.com/role/DisclosureDisclosureOfGeographicAllocationOfTheStatementOfOperationsAndComprehensiveIncomeLossExplanatoryTableTextBlockDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#DisclosureDisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsExplanatoryDetails" roleURI="http://www.asanko.com/role/DisclosureDisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsExplanatoryDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#SegmentedInformationNarrativeDetails" roleURI="http://www.asanko.com/role/SegmentedInformationNarrativeDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#IncomeTaxNarrativeDetails" roleURI="http://www.asanko.com/role/IncomeTaxNarrativeDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#ReceivableDueFromRelatedPartyDetailTextuals" roleURI="http://www.asanko.com/role/ReceivableDueFromRelatedPartyDetailTextuals"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#InvestmentInJointVentureSensitivityAnalysisDetails" roleURI="http://www.asanko.com/role/InvestmentInJointVentureSensitivityAnalysisDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#InvestmentInJointVentureDisclosureOfDetailedInformationAboutSummaryOfFinanceExpensesIncurredByJVDetails" roleURI="http://www.asanko.com/role/InvestmentInJointVentureDisclosureOfDetailedInformationAboutSummaryOfFinanceExpensesIncurredByJVDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#EquityReservesDisclosureOfNumberRSUsDetails" roleURI="http://www.asanko.com/role/EquityReservesDisclosureOfNumberRSUsDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#EquityReservesDisclosureOfMovementInRSULiabilityDetails" roleURI="http://www.asanko.com/role/EquityReservesDisclosureOfMovementInRSULiabilityDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#ExplorationAndEvaluationAssetsDetailTextuals" roleURI="http://www.asanko.com/role/ExplorationAndEvaluationAssetsDetailTextuals"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#InvestmentInJointVentureScheduleOfSensitivityAnalysisDetails" roleURI="http://www.asanko.com/role/InvestmentInJointVentureScheduleOfSensitivityAnalysisDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#EquityReservesAndLongtermIncentivePlanAwardsDisclosureOfReconciliationOfTheMovementInPSUsDetails" roleURI="http://www.asanko.com/role/EquityReservesAndLongtermIncentivePlanAwardsDisclosureOfReconciliationOfTheMovementInPSUsDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#EquityReservesAndLongtermIncentivePlanAwardsDisclosureOfReconciliationOfTheMovementInDSUsDetails" roleURI="http://www.asanko.com/role/EquityReservesAndLongtermIncentivePlanAwardsDisclosureOfReconciliationOfTheMovementInDSUsDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#EquityReservesAndLongtermIncentivePlanAwardsDisclosureOfMovementInPSUsLiabilityDetails" roleURI="http://www.asanko.com/role/EquityReservesAndLongtermIncentivePlanAwardsDisclosureOfMovementInPSUsLiabilityDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#EquityReservesAndLongtermIncentivePlanAwardsDisclosureOfMovementInDSUsLiabilityDetails" roleURI="http://www.asanko.com/role/EquityReservesAndLongtermIncentivePlanAwardsDisclosureOfMovementInDSUsLiabilityDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#EquityReservesAndLongtermIncentivePlanAwardsDisclosureOfMovementInPhantomShareUnitLiabilityDetails" roleURI="http://www.asanko.com/role/EquityReservesAndLongtermIncentivePlanAwardsDisclosureOfMovementInPhantomShareUnitLiabilityDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#InvestmentInJointVentureDisclosureOfGoldPriceAssumptionsDetails" roleURI="http://www.asanko.com/role/InvestmentInJointVentureDisclosureOfGoldPriceAssumptionsDetails"/>
  <roleRef xlink:type="simple" xlink:href="gau-20221231.xsd#InvestmentInJointVentureDisclosureOfEstimatedRecoverableAmountOfAGMCGUAndItsCarryingValueDetails" roleURI="http://www.asanko.com/role/InvestmentInJointVentureDisclosureOfEstimatedRecoverableAmountOfAGMCGUAndItsCarryingValueDetails"/>
  <arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/notAll" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#notAll"/>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/DocumentAndEntityInformation">
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressesLineItems" xlink:label="loc_dei_EntityAddressesLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressesTable" xlink:label="loc_dei_EntityAddressesTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressesAddressTypeAxis" xlink:label="loc_dei_EntityAddressesAddressTypeAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_AddressTypeDomain" xlink:label="loc_dei_AddressTypeDomain_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_BusinessContactMember" xlink:label="loc_dei_BusinessContactMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_AddressTypeDomain" xlink:label="loc_dei_AddressTypeDomain_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityRegistrantName" xlink:label="loc_dei_EntityRegistrantName_6"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityCentralIndexKey" xlink:label="loc_dei_EntityCentralIndexKey_7"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityCurrentReportingStatus" xlink:label="loc_dei_EntityCurrentReportingStatus_8"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_CurrentFiscalYearEndDate" xlink:label="loc_dei_CurrentFiscalYearEndDate_9"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentType" xlink:label="loc_dei_DocumentType_10"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentPeriodEndDate" xlink:label="loc_dei_DocumentPeriodEndDate_11"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_12"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_AmendmentFlag" xlink:label="loc_dei_AmendmentFlag_13"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_AmendmentDescription" xlink:label="loc_dei_AmendmentDescription_14"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_TradingSymbol" xlink:label="loc_dei_TradingSymbol_15"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentFiscalYearFocus" xlink:label="loc_dei_DocumentFiscalYearFocus_16"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="loc_dei_DocumentFiscalPeriodFocus_17"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityEmergingGrowthCompany" xlink:label="loc_dei_EntityEmergingGrowthCompany_18"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityExTransitionPeriod" xlink:label="loc_dei_EntityExTransitionPeriod_19"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityFilerCategory" xlink:label="loc_dei_EntityFilerCategory_20"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityInteractiveDataCurrent" xlink:label="loc_dei_EntityInteractiveDataCurrent_21"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityVoluntaryFilers" xlink:label="loc_dei_EntityVoluntaryFilers_22"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityWellKnownSeasonedIssuer" xlink:label="loc_dei_EntityWellKnownSeasonedIssuer_23"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityPublicFloat" xlink:label="loc_dei_EntityPublicFloat_24"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityFileNumber" xlink:label="loc_dei_EntityFileNumber_25"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityIncorporationStateCountryCode" xlink:label="loc_dei_EntityIncorporationStateCountryCode_26"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressAddressLine1" xlink:label="loc_dei_EntityAddressAddressLine1_27"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressAddressLine2" xlink:label="loc_dei_EntityAddressAddressLine2_28"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressCityOrTown" xlink:label="loc_dei_EntityAddressCityOrTown_29"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressStateOrProvince" xlink:label="loc_dei_EntityAddressStateOrProvince_30"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressPostalZipCode" xlink:label="loc_dei_EntityAddressPostalZipCode_31"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_CityAreaCode" xlink:label="loc_dei_CityAreaCode_32"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LocalPhoneNumber" xlink:label="loc_dei_LocalPhoneNumber_33"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_AnnualInformationForm" xlink:label="loc_dei_AnnualInformationForm_34"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_AuditedAnnualFinancialStatements" xlink:label="loc_dei_AuditedAnnualFinancialStatements_35"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentAnnualReport" xlink:label="loc_dei_DocumentAnnualReport_36"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentRegistrationStatement" xlink:label="loc_dei_DocumentRegistrationStatement_37"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_SecurityExchangeName" xlink:label="loc_dei_SecurityExchangeName_38"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_Security12bTitle" xlink:label="loc_dei_Security12bTitle_39"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_ContactPersonnelName" xlink:label="loc_dei_ContactPersonnelName_40"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressCountry" xlink:label="loc_dei_EntityAddressCountry_41"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_AuditorFirmId" xlink:label="loc_dei_AuditorFirmId_42"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_AuditorName" xlink:label="loc_dei_AuditorName_43"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_AuditorLocation" xlink:label="loc_dei_AuditorLocation_44"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_EntityAddressesTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_EntityAddressesTable_1" xlink:to="loc_dei_EntityAddressesAddressTypeAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_EntityAddressesAddressTypeAxis_1" xlink:to="loc_dei_AddressTypeDomain_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_AddressTypeDomain_1" xlink:to="loc_dei_BusinessContactMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_EntityAddressesAddressTypeAxis_1" xlink:to="loc_dei_AddressTypeDomain_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_EntityRegistrantName_6" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_EntityCentralIndexKey_7" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_EntityCurrentReportingStatus_8" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_CurrentFiscalYearEndDate_9" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_DocumentType_10" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_DocumentPeriodEndDate_11" order="60" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_12" order="70" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_AmendmentFlag_13" order="80" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_AmendmentDescription_14" order="90" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_TradingSymbol_15" order="100" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_DocumentFiscalYearFocus_16" order="110" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_DocumentFiscalPeriodFocus_17" order="120" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_EntityEmergingGrowthCompany_18" order="130" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_EntityExTransitionPeriod_19" order="140" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_EntityFilerCategory_20" order="150" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_EntityInteractiveDataCurrent_21" order="160" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_EntityVoluntaryFilers_22" order="170" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_EntityWellKnownSeasonedIssuer_23" order="180" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_EntityPublicFloat_24" order="190" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_EntityFileNumber_25" order="200" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_EntityIncorporationStateCountryCode_26" order="210" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_EntityAddressAddressLine1_27" order="220" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_EntityAddressAddressLine2_28" order="230" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_EntityAddressCityOrTown_29" order="240" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_EntityAddressStateOrProvince_30" order="250" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_EntityAddressPostalZipCode_31" order="260" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_CityAreaCode_32" order="270" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_LocalPhoneNumber_33" order="280" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_AnnualInformationForm_34" order="290" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_AuditedAnnualFinancialStatements_35" order="300" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_DocumentAnnualReport_36" order="310" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_DocumentRegistrationStatement_37" order="320" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_SecurityExchangeName_38" order="330" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_Security12bTitle_39" order="340" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_ContactPersonnelName_40" order="350" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_EntityAddressCountry_41" order="360" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_AuditorFirmId_42" order="370" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_AuditorName_43" order="380" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_0" xlink:to="loc_dei_AuditorLocation_44" order="390" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/StockholdersEquity">
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsLineItems" xlink:label="loc_gau_StatementsLineItems_0"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsTable" xlink:label="loc_gau_StatementsTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ComponentsOfEquityAxis" xlink:label="loc_ifrs-full_ComponentsOfEquityAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EquityMember" xlink:label="loc_ifrs-full_EquityMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IssuedCapitalMember" xlink:label="loc_ifrs-full_IssuedCapitalMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherReservesMember" xlink:label="loc_ifrs-full_OtherReservesMember_2"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RetainedEarningsMember" xlink:label="loc_ifrs-full_RetainedEarningsMember_3"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EquityMember" xlink:label="loc_ifrs-full_EquityMember_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Equity" xlink:label="loc_ifrs-full_Equity_8"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NumberOfSharesOutstanding" xlink:label="loc_ifrs-full_NumberOfSharesOutstanding_9"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncreaseDecreaseThroughExerciseOfOptions" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughExerciseOfOptions_10"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_IncreaseDecreaseThroughExerciseOfOptionsShares" xlink:label="loc_gau_IncreaseDecreaseThroughExerciseOfOptionsShares_11"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions_12"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ComprehensiveIncome" xlink:label="loc_ifrs-full_ComprehensiveIncome_13"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_StatementsTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gau_StatementsTable_1" xlink:to="loc_ifrs-full_ComponentsOfEquityAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ComponentsOfEquityAxis_1" xlink:to="loc_ifrs-full_EquityMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EquityMember_1" xlink:to="loc_ifrs-full_IssuedCapitalMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EquityMember_1" xlink:to="loc_ifrs-full_OtherReservesMember_2" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EquityMember_1" xlink:to="loc_ifrs-full_RetainedEarningsMember_3" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ComponentsOfEquityAxis_1" xlink:to="loc_ifrs-full_EquityMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_ifrs-full_Equity_8" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_ifrs-full_NumberOfSharesOutstanding_9" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_ifrs-full_IncreaseDecreaseThroughExerciseOfOptions_10" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_IncreaseDecreaseThroughExerciseOfOptionsShares_11" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions_12" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_ifrs-full_ComprehensiveIncome_13" order="60" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/CommitmentsAndContingencies">
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsLineItems" xlink:label="loc_gau_StatementsLineItems_0"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsTable" xlink:label="loc_gau_StatementsTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_2"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory" xlink:label="loc_ifrs-full_DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory_5"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_StatementsTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gau_StatementsTable_1" xlink:to="loc_dei_LegalEntityAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_1" xlink:to="loc_dei_EntityDomain_Default" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_1" xlink:to="loc_dei_EntityDomain_2" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory_5" order="10" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/NotesToFinancialStatementsDisclosureOfCashFlowStatementExplanatoryTextBlock">
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsLineItems" xlink:label="loc_gau_StatementsLineItems_0"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsTable" xlink:label="loc_gau_StatementsTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_2"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfCashFlowStatementExplanatory" xlink:label="loc_ifrs-full_DisclosureOfCashFlowStatementExplanatory_5"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_StatementsTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gau_StatementsTable_1" xlink:to="loc_dei_LegalEntityAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_1" xlink:to="loc_dei_EntityDomain_Default" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_1" xlink:to="loc_dei_EntityDomain_2" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfCashFlowStatementExplanatory_5" order="10" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/NotesToFinancialStatementsDisclosureOfFinancialRiskManagementExplanatoryTextBlock">
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsLineItems" xlink:label="loc_gau_StatementsLineItems_0"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsTable" xlink:label="loc_gau_StatementsTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_2"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinancialRiskManagementExplanatory" xlink:label="loc_ifrs-full_DisclosureOfFinancialRiskManagementExplanatory_5"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_StatementsTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gau_StatementsTable_1" xlink:to="loc_dei_LegalEntityAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_1" xlink:to="loc_dei_EntityDomain_Default" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_1" xlink:to="loc_dei_EntityDomain_2" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfFinancialRiskManagementExplanatory_5" order="10" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/NotesToFinancialStatementsDisclosureOfRelatedPartyExplanatoryTextBlock">
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsLineItems" xlink:label="loc_gau_StatementsLineItems_0"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsTable" xlink:label="loc_gau_StatementsTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_2"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfRelatedPartyExplanatory" xlink:label="loc_ifrs-full_DisclosureOfRelatedPartyExplanatory_5"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_StatementsTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gau_StatementsTable_1" xlink:to="loc_dei_LegalEntityAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_1" xlink:to="loc_dei_EntityDomain_Default" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_1" xlink:to="loc_dei_EntityDomain_2" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfRelatedPartyExplanatory_5" order="10" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/InvestmentinJointVentureTables">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfJointVenturesLineItems" xlink:label="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfJointVenturesTable" xlink:label="loc_ifrs-full_DisclosureOfJointVenturesTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesAxis" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SubsidiariesMember" xlink:label="loc_ifrs-full_SubsidiariesMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AsankoGoldMineMember" xlink:label="loc_gau_AsankoGoldMineMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DisclosureOfInvestmentInJointVentureExplanatory" xlink:label="loc_gau_DisclosureOfInvestmentInJointVentureExplanatory_5"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReconciliationOfSummarisedFinancialInformationOfJointVentureAccountedForUsingEquityMethodToCarryingAmountOfInterestInJointVentureExplanatory" xlink:label="loc_ifrs-full_DisclosureOfReconciliationOfSummarisedFinancialInformationOfJointVentureAccountedForUsingEquityMethodToCarryingAmountOfInterestInJointVentureExplanatory_6"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DisclosureOfProductionCostsExplanatory" xlink:label="loc_gau_DisclosureOfProductionCostsExplanatory_7"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitExplanatory" xlink:label="loc_ifrs-full_DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitExplanatory_8"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DisclosureOfAdditionalInformationAboutPricingAssumptionExplanatory" xlink:label="loc_gau_DisclosureOfAdditionalInformationAboutPricingAssumptionExplanatory_9"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DisclosureOfSensitivityAnalysisExplanatory" xlink:label="loc_gau_DisclosureOfSensitivityAnalysisExplanatory_10"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfInventoriesExplanatory" xlink:label="loc_ifrs-full_DisclosureOfInventoriesExplanatory_11"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DisclosureOfMovementInAssetRetirementObligationExplanatory" xlink:label="loc_gau_DisclosureOfMovementInAssetRetirementObligationExplanatory_12"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DisclosureOfDetailedInformationAboutPreferredShareInvestmentsExplanatory" xlink:label="loc_gau_DisclosureOfDetailedInformationAboutPreferredShareInvestmentsExplanatory_13"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DisclosureOfFinanceExpensesIncurredByJointVenturesExplanatory" xlink:label="loc_gau_DisclosureOfFinanceExpensesIncurredByJointVenturesExplanatory_14"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DisclosureOfCashFlowsOfAgmOfJointVentureExplanatory" xlink:label="loc_gau_DisclosureOfCashFlowsOfAgmOfJointVentureExplanatory_15"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DisclosureOfFairValueAdjustmentAssociatedWithJointVentureExplanatory" xlink:label="loc_gau_DisclosureOfFairValueAdjustmentAssociatedWithJointVentureExplanatory_16"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DisclosureOfRightOfUseAssetsOfJointVentureExplanatory" xlink:label="loc_gau_DisclosureOfRightOfUseAssetsOfJointVentureExplanatory_17"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DisclosureOfLeaseLiabilityOfJointVentureExplanatory" xlink:label="loc_gau_DisclosureOfLeaseLiabilityOfJointVentureExplanatory_18"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfJointVenturesTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesTable_1" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1" xlink:to="loc_ifrs-full_SubsidiariesMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SubsidiariesMember_1" xlink:to="loc_gau_AsankoGoldMineMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_DisclosureOfInvestmentInJointVentureExplanatory_5" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfReconciliationOfSummarisedFinancialInformationOfJointVentureAccountedForUsingEquityMethodToCarryingAmountOfInterestInJointVentureExplanatory_6" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_DisclosureOfProductionCostsExplanatory_7" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitExplanatory_8" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_DisclosureOfAdditionalInformationAboutPricingAssumptionExplanatory_9" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_DisclosureOfSensitivityAnalysisExplanatory_10" order="60" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfInventoriesExplanatory_11" order="70" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_DisclosureOfMovementInAssetRetirementObligationExplanatory_12" order="80" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_DisclosureOfDetailedInformationAboutPreferredShareInvestmentsExplanatory_13" order="90" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_DisclosureOfFinanceExpensesIncurredByJointVenturesExplanatory_14" order="100" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_DisclosureOfCashFlowsOfAgmOfJointVentureExplanatory_15" order="110" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_DisclosureOfFairValueAdjustmentAssociatedWithJointVentureExplanatory_16" order="120" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_DisclosureOfRightOfUseAssetsOfJointVentureExplanatory_17" order="130" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_DisclosureOfLeaseLiabilityOfJointVentureExplanatory_18" order="140" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/NotesToFinancialStatementsDisclosureOfEarningsPerShareExplanatoryTextBlockTables">
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsLineItems" xlink:label="loc_gau_StatementsLineItems_0"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsTable" xlink:label="loc_gau_StatementsTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_2"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EarningsPerShareExplanatory" xlink:label="loc_ifrs-full_EarningsPerShareExplanatory_5"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_StatementsTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gau_StatementsTable_1" xlink:to="loc_dei_LegalEntityAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_1" xlink:to="loc_dei_EntityDomain_Default" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_1" xlink:to="loc_dei_EntityDomain_2" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_ifrs-full_EarningsPerShareExplanatory_5" order="10" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/NotesToFinancialStatementsDisclosureOfMineralPropertiesPlantAndEquipmentAndExplorationAndEvaluationAssetsExplanatoryTextBlockTables">
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsLineItems" xlink:label="loc_gau_StatementsLineItems_0"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsTable" xlink:label="loc_gau_StatementsTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_2"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DisclosureOfDetailedInformationAboutMineralPropertiesExplanatoryTableTextBlock" xlink:label="loc_gau_DisclosureOfDetailedInformationAboutMineralPropertiesExplanatoryTableTextBlock_5"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DisclosureOfPrecommercialProductionCostsTableTextBlock" xlink:label="loc_gau_DisclosureOfPrecommercialProductionCostsTableTextBlock_6"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_StatementsTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gau_StatementsTable_1" xlink:to="loc_dei_LegalEntityAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_1" xlink:to="loc_dei_EntityDomain_Default" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_1" xlink:to="loc_dei_EntityDomain_2" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_DisclosureOfDetailedInformationAboutMineralPropertiesExplanatoryTableTextBlock_5" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_DisclosureOfPrecommercialProductionCostsTableTextBlock_6" order="20" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/CommitmentsAndContingenciesTables">
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsLineItems" xlink:label="loc_gau_StatementsLineItems_0"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsTable" xlink:label="loc_gau_StatementsTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_2"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DisclosureOfDetailedInformationAboutCommitmentsExplanatoryTableTextBlock" xlink:label="loc_gau_DisclosureOfDetailedInformationAboutCommitmentsExplanatoryTableTextBlock_5"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_StatementsTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gau_StatementsTable_1" xlink:to="loc_dei_LegalEntityAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_1" xlink:to="loc_dei_EntityDomain_Default" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_1" xlink:to="loc_dei_EntityDomain_2" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_DisclosureOfDetailedInformationAboutCommitmentsExplanatoryTableTextBlock_5" order="10" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/NotesToFinancialStatementsDisclosureOfCashFlowStatementExplanatoryTextBlockTables">
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsLineItems" xlink:label="loc_gau_StatementsLineItems_0"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsTable" xlink:label="loc_gau_StatementsTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_2"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DisclosureOfDetailedInformationAboutCashFlowInformationExplanatoryTableTextBlock" xlink:label="loc_gau_DisclosureOfDetailedInformationAboutCashFlowInformationExplanatoryTableTextBlock_5"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DisclosureOfChangesInNoncashWorkingCapitalExplanatoryTableTextBlock" xlink:label="loc_gau_DisclosureOfChangesInNoncashWorkingCapitalExplanatoryTableTextBlock_6"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_StatementsTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gau_StatementsTable_1" xlink:to="loc_dei_LegalEntityAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_1" xlink:to="loc_dei_EntityDomain_Default" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_1" xlink:to="loc_dei_EntityDomain_2" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_DisclosureOfDetailedInformationAboutCashFlowInformationExplanatoryTableTextBlock_5" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_DisclosureOfChangesInNoncashWorkingCapitalExplanatoryTableTextBlock_6" order="20" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/NotesToFinancialStatementsDisclosureOfFairValueOfFinancialInstrumentsExplanatoryTextBlockTables">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinancialInstrumentsLineItems" xlink:label="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinancialInstrumentsTable" xlink:label="loc_ifrs-full_DisclosureOfFinancialInstrumentsTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TypesOfRisksAxis" xlink:label="loc_ifrs-full_TypesOfRisksAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TypesOfRisksMember" xlink:label="loc_ifrs-full_TypesOfRisksMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrencyRiskMember" xlink:label="loc_ifrs-full_CurrencyRiskMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TypesOfRisksMember" xlink:label="loc_ifrs-full_TypesOfRisksMember_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsExplanatory" xlink:label="loc_ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsExplanatory_6"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfFinancialInstrumentsTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsTable_1" xlink:to="loc_ifrs-full_TypesOfRisksAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_TypesOfRisksAxis_1" xlink:to="loc_ifrs-full_TypesOfRisksMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfRisksMember_1" xlink:to="loc_ifrs-full_CurrencyRiskMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_TypesOfRisksAxis_1" xlink:to="loc_ifrs-full_TypesOfRisksMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsExplanatory_6" order="10" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/Notestofinancialstatementsdisclosureofrelatedpartyexplanatorytextblocktables">
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsLineItems" xlink:label="loc_gau_StatementsLineItems_0"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsTable" xlink:label="loc_gau_StatementsTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_2"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory" xlink:label="loc_ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory_5"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_StatementsTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gau_StatementsTable_1" xlink:to="loc_dei_LegalEntityAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_1" xlink:to="loc_dei_EntityDomain_Default" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_1" xlink:to="loc_dei_EntityDomain_2" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory_5" order="10" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/NatureOfOperationsNarrativeDetails">
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsLineItems" xlink:label="loc_gau_StatementsLineItems_0"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsTable" xlink:label="loc_gau_StatementsTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesAxis" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForSubsidiariesMember" xlink:label="loc_ifrs-full_EntitysTotalForSubsidiariesMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AsankoGoldMineMember" xlink:label="loc_gau_AsankoGoldMineMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForSubsidiariesMember" xlink:label="loc_ifrs-full_EntitysTotalForSubsidiariesMember_Default"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AgreementAxis" xlink:label="loc_gau_AgreementAxis_5"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AgreementDomain" xlink:label="loc_gau_AgreementDomain_5"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DefinitiveAgreementsMember" xlink:label="loc_gau_DefinitiveAgreementsMember_5"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AgreementDomain" xlink:label="loc_gau_AgreementDomain_Default"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AgreementDescription" xlink:label="loc_gau_AgreementDescription_10"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProportionOfOwnershipInterestInJointVenture" xlink:label="loc_ifrs-full_ProportionOfOwnershipInterestInJointVenture_11"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProportionOfOwnershipInterestsHeldByNoncontrollingInterests" xlink:label="loc_ifrs-full_ProportionOfOwnershipInterestsHeldByNoncontrollingInterests_12"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ProportionOfOwnershipInterestsHeldByGovernmentOfGhana" xlink:label="loc_gau_ProportionOfOwnershipInterestsHeldByGovernmentOfGhana_13"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_PercentageOfEconomicInterestInExplorationAssets" xlink:label="loc_gau_PercentageOfEconomicInterestInExplorationAssets_14"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_StatementsTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gau_StatementsTable_1" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForSubsidiariesMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForSubsidiariesMember_1" xlink:to="loc_gau_AsankoGoldMineMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForSubsidiariesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gau_StatementsTable_1" xlink:to="loc_gau_AgreementAxis_5" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gau_AgreementAxis_5" xlink:to="loc_gau_AgreementDomain_5" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_AgreementDomain_5" xlink:to="loc_gau_DefinitiveAgreementsMember_5" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gau_AgreementAxis_5" xlink:to="loc_gau_AgreementDomain_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_AgreementDescription_10" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_ifrs-full_ProportionOfOwnershipInterestInJointVenture_11" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_ifrs-full_ProportionOfOwnershipInterestsHeldByNoncontrollingInterests_12" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_ProportionOfOwnershipInterestsHeldByGovernmentOfGhana_13" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_PercentageOfEconomicInterestInExplorationAssets_14" order="50" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/EarningsLossPerShareAttributableToCommonShareholdersNarrativeDetails">
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsLineItems" xlink:label="loc_gau_StatementsLineItems_0"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsTable" xlink:label="loc_gau_StatementsTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_2"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfInstrumentsWithPotentialFutureDilutiveEffectNotIncludedInCalculationOfDilutedEarningsPerShareExplanatory" xlink:label="loc_ifrs-full_DisclosureOfInstrumentsWithPotentialFutureDilutiveEffectNotIncludedInCalculationOfDilutedEarningsPerShareExplanatory_5"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_StatementsTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gau_StatementsTable_1" xlink:to="loc_dei_LegalEntityAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_1" xlink:to="loc_dei_EntityDomain_Default" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_1" xlink:to="loc_dei_EntityDomain_2" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfInstrumentsWithPotentialFutureDilutiveEffectNotIncludedInCalculationOfDilutedEarningsPerShareExplanatory_5" order="10" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/FinancialAssetsNarrativeDetails">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinancialAssetsLineItems" xlink:label="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinancialAssetsTable" xlink:label="loc_ifrs-full_DisclosureOfFinancialAssetsTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesAxis" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForSubsidiariesMember" xlink:label="loc_ifrs-full_EntitysTotalForSubsidiariesMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_JVFincoMember" xlink:label="loc_gau_JVFincoMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_GoldFieldsLimitedMember" xlink:label="loc_gau_GoldFieldsLimitedMember_2"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForSubsidiariesMember" xlink:label="loc_ifrs-full_EntitysTotalForSubsidiariesMember_Default"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RedemptionDateAxis" xlink:label="loc_gau_RedemptionDateAxis_6"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RedemptionDateDomain" xlink:label="loc_gau_RedemptionDateDomain_6"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RedeemablePreferenceShareWithDeterminableRedemptionDateMember" xlink:label="loc_gau_RedeemablePreferenceShareWithDeterminableRedemptionDateMember_6"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RedeemablePreferenceSharesWithNoFixedRedemptionDateMember" xlink:label="loc_gau_RedeemablePreferenceSharesWithNoFixedRedemptionDateMember_7"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RedemptionDateDomain" xlink:label="loc_gau_RedemptionDateDomain_Default"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_FaceValueOfPreferenceSharesSubscribed" xlink:label="loc_gau_FaceValueOfPreferenceSharesSubscribed_12"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RedemptionOfPreferredSharesAmount" xlink:label="loc_gau_RedemptionOfPreferredSharesAmount_13"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_PreferenceSharesRedeemableShareSubscribed" xlink:label="loc_gau_PreferenceSharesRedeemableShareSubscribed_14"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_PreferenceSharesRedeemableSharePricePerShare" xlink:label="loc_gau_PreferenceSharesRedeemableSharePricePerShare_15"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_FairValueOfPreferenceSharesSubscribed" xlink:label="loc_gau_FairValueOfPreferenceSharesSubscribed_16"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DiscountRateOfFuturePreferenceShareRedemptions" xlink:label="loc_gau_DiscountRateOfFuturePreferenceShareRedemptions_17"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ForecastedFutureCashFlowsAtDiscountRate" xlink:label="loc_gau_ForecastedFutureCashFlowsAtDiscountRate_18"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinancialAssetsAtFairValue" xlink:label="loc_ifrs-full_FinancialAssetsAtFairValue_19"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_PreferenceSharesSettled" xlink:label="loc_gau_PreferenceSharesSettled_20"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AccretionExpense" xlink:label="loc_gau_AccretionExpense_21"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AccretionIncome" xlink:label="loc_gau_AccretionIncome_22"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfFinancialAssetsTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsTable_1" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForSubsidiariesMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForSubsidiariesMember_1" xlink:to="loc_gau_JVFincoMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForSubsidiariesMember_1" xlink:to="loc_gau_GoldFieldsLimitedMember_2" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForSubsidiariesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsTable_1" xlink:to="loc_gau_RedemptionDateAxis_6" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gau_RedemptionDateAxis_6" xlink:to="loc_gau_RedemptionDateDomain_6" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_RedemptionDateDomain_6" xlink:to="loc_gau_RedeemablePreferenceShareWithDeterminableRedemptionDateMember_6" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_RedemptionDateDomain_6" xlink:to="loc_gau_RedeemablePreferenceSharesWithNoFixedRedemptionDateMember_7" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gau_RedemptionDateAxis_6" xlink:to="loc_gau_RedemptionDateDomain_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_0" xlink:to="loc_gau_FaceValueOfPreferenceSharesSubscribed_12" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_0" xlink:to="loc_gau_RedemptionOfPreferredSharesAmount_13" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_0" xlink:to="loc_gau_PreferenceSharesRedeemableShareSubscribed_14" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_0" xlink:to="loc_gau_PreferenceSharesRedeemableSharePricePerShare_15" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_0" xlink:to="loc_gau_FairValueOfPreferenceSharesSubscribed_16" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_0" xlink:to="loc_gau_DiscountRateOfFuturePreferenceShareRedemptions_17" order="60" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_0" xlink:to="loc_gau_ForecastedFutureCashFlowsAtDiscountRate_18" order="70" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_0" xlink:to="loc_ifrs-full_FinancialAssetsAtFairValue_19" order="80" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_0" xlink:to="loc_gau_PreferenceSharesSettled_20" order="90" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_0" xlink:to="loc_gau_AccretionExpense_21" order="100" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_0" xlink:to="loc_gau_AccretionIncome_22" order="110" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/DisclosureDisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatoryDetails">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReservesWithinEquityLineItems" xlink:label="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReservesWithinEquityTable" xlink:label="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EquityTransactionsAxis" xlink:label="loc_gau_EquityTransactionsAxis_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EquityTransactionsDomain" xlink:label="loc_gau_EquityTransactionsDomain_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_SharePurchaseWarrantsIssuedToRedKiteInConjunctionWithDrawdownOfFinalTwoZeroZeroMillionOfLoanFacilityMember" xlink:label="loc_gau_SharePurchaseWarrantsIssuedToRedKiteInConjunctionWithDrawdownOfFinalTwoZeroZeroMillionOfLoanFacilityMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RestrictedShareUnitsMember" xlink:label="loc_gau_RestrictedShareUnitsMember_2"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_PerformanceShareUnitsMember" xlink:label="loc_gau_PerformanceShareUnitsMember_3"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DeferredShareUnitsMember" xlink:label="loc_gau_DeferredShareUnitsMember_4"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_PhantomShareUnitsMember" xlink:label="loc_gau_PhantomShareUnitsMember_5"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EquityTransactionsDomain" xlink:label="loc_gau_EquityTransactionsDomain_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RangeAxis" xlink:label="loc_ifrs-full_RangeAxis_9"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RangesMember" xlink:label="loc_ifrs-full_RangesMember_9"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_BottomOfRangeMember" xlink:label="loc_ifrs-full_BottomOfRangeMember_9"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TopOfRangeMember" xlink:label="loc_ifrs-full_TopOfRangeMember_10"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RangesMember" xlink:label="loc_ifrs-full_RangesMember_Default"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DescriptionForNumberOfSharesIssuableUnderTwoPlans" xlink:label="loc_gau_DescriptionForNumberOfSharesIssuableUnderTwoPlans_15"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ExplanationOfShareOptionsInSharebasedPaymentArrangement" xlink:label="loc_ifrs-full_ExplanationOfShareOptionsInSharebasedPaymentArrangement_16"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ForefeitureRateRestrictedShareUnitsGranted" xlink:label="loc_gau_ForefeitureRateRestrictedShareUnitsGranted_17"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfVestingRequirementsForSharebasedPaymentArrangement" xlink:label="loc_ifrs-full_DescriptionOfVestingRequirementsForSharebasedPaymentArrangement_18"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ParentageOfPerformanceMultiplier" xlink:label="loc_gau_ParentageOfPerformanceMultiplier_19"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ShareBasedPayments" xlink:label="loc_gau_ShareBasedPayments_20"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NumberOfShareOptionsExercisedInSharebasedPaymentArrangement" xlink:label="loc_ifrs-full_NumberOfShareOptionsExercisedInSharebasedPaymentArrangement_21"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_WeightedAverageExercisePriceOfShareOptionsExercisedInSharebasedPaymentArrangement2019" xlink:label="loc_ifrs-full_WeightedAverageExercisePriceOfShareOptionsExercisedInSharebasedPaymentArrangement2019_22"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProceedsFromExerciseOfOptions" xlink:label="loc_ifrs-full_ProceedsFromExerciseOfOptions_23"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ShareBasedPaymentsCapitalizedToMineralProperties" xlink:label="loc_gau_ShareBasedPaymentsCapitalizedToMineralProperties_24"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfOptionLifeShareOptionsGranted" xlink:label="loc_ifrs-full_DescriptionOfOptionLifeShareOptionsGranted_25"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ExpectedDividendShareOptionsGranted" xlink:label="loc_ifrs-full_ExpectedDividendShareOptionsGranted_26"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ForfeitureRateShareOptionsGranted" xlink:label="loc_gau_ForfeitureRateShareOptionsGranted_27"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinancialLiabilities" xlink:label="loc_ifrs-full_FinancialLiabilities_28"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TradeAndOtherCurrentPayables" xlink:label="loc_ifrs-full_TradeAndOtherCurrentPayables_29"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StockIssuedDuringPeriodShareForCashSettled" xlink:label="loc_gau_StockIssuedDuringPeriodShareForCashSettled_30"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1" xlink:to="loc_gau_EquityTransactionsAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gau_EquityTransactionsAxis_1" xlink:to="loc_gau_EquityTransactionsDomain_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_EquityTransactionsDomain_1" xlink:to="loc_gau_SharePurchaseWarrantsIssuedToRedKiteInConjunctionWithDrawdownOfFinalTwoZeroZeroMillionOfLoanFacilityMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_EquityTransactionsDomain_1" xlink:to="loc_gau_RestrictedShareUnitsMember_2" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_EquityTransactionsDomain_1" xlink:to="loc_gau_PerformanceShareUnitsMember_3" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_EquityTransactionsDomain_1" xlink:to="loc_gau_DeferredShareUnitsMember_4" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_EquityTransactionsDomain_1" xlink:to="loc_gau_PhantomShareUnitsMember_5" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gau_EquityTransactionsAxis_1" xlink:to="loc_gau_EquityTransactionsDomain_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1" xlink:to="loc_ifrs-full_RangeAxis_9" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_RangeAxis_9" xlink:to="loc_ifrs-full_RangesMember_9" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_RangesMember_9" xlink:to="loc_ifrs-full_BottomOfRangeMember_9" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_RangesMember_9" xlink:to="loc_ifrs-full_TopOfRangeMember_10" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_RangeAxis_9" xlink:to="loc_ifrs-full_RangesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_DescriptionForNumberOfSharesIssuableUnderTwoPlans_15" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_ExplanationOfShareOptionsInSharebasedPaymentArrangement_16" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_ForefeitureRateRestrictedShareUnitsGranted_17" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_DescriptionOfVestingRequirementsForSharebasedPaymentArrangement_18" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_ParentageOfPerformanceMultiplier_19" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_ShareBasedPayments_20" order="60" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_NumberOfShareOptionsExercisedInSharebasedPaymentArrangement_21" order="70" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_WeightedAverageExercisePriceOfShareOptionsExercisedInSharebasedPaymentArrangement2019_22" order="80" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_ProceedsFromExerciseOfOptions_23" order="90" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_ShareBasedPaymentsCapitalizedToMineralProperties_24" order="100" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_DescriptionOfOptionLifeShareOptionsGranted_25" order="110" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_ExpectedDividendShareOptionsGranted_26" order="120" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_ForfeitureRateShareOptionsGranted_27" order="130" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_FinancialLiabilities_28" order="140" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_TradeAndOtherCurrentPayables_29" order="150" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_StockIssuedDuringPeriodShareForCashSettled_30" order="160" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/DisclosureDisclosureOfCommitmentsExplanatoryDetails">
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsLineItems" xlink:label="loc_gau_StatementsLineItems_0"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsTable" xlink:label="loc_gau_StatementsTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesAxis" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForSubsidiariesMember" xlink:label="loc_ifrs-full_EntitysTotalForSubsidiariesMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AsankoGoldGhanaLimitedMember" xlink:label="loc_gau_AsankoGoldGhanaLimitedMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForSubsidiariesMember" xlink:label="loc_ifrs-full_EntitysTotalForSubsidiariesMember_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ExposureToCreditRiskOnLoanCommitmentsAndFinancialGuaranteeContracts" xlink:label="loc_ifrs-full_ExposureToCreditRiskOnLoanCommitmentsAndFinancialGuaranteeContracts_6"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_StatementsTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gau_StatementsTable_1" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForSubsidiariesMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForSubsidiariesMember_1" xlink:to="loc_gau_AsankoGoldGhanaLimitedMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForSubsidiariesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_ifrs-full_ExposureToCreditRiskOnLoanCommitmentsAndFinancialGuaranteeContracts_6" order="10" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/InvestmentinJointVentureDetails">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfJointVenturesLineItems" xlink:label="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfJointVenturesTable" xlink:label="loc_ifrs-full_DisclosureOfJointVenturesTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AsankoGoldMineMember" xlink:label="loc_gau_AsankoGoldMineMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AdansiGoldCompanyGhanaLimitedMember" xlink:label="loc_gau_AdansiGoldCompanyGhanaLimitedMember_2"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ShikaGroupFinanceLimitedMember" xlink:label="loc_gau_ShikaGroupFinanceLimitedMember_3"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_7"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_7"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RkMineFinanceTrustIMember" xlink:label="loc_gau_RkMineFinanceTrustIMember_7"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RandMerchantBankMember" xlink:label="loc_gau_RandMerchantBankMember_8"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NonadjustingEventsAfterReportingPeriodAxis" xlink:label="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_12"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NonadjustingEventsMember" xlink:label="loc_ifrs-full_NonadjustingEventsMember_12"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EventsAfterReportingPeriodMember" xlink:label="loc_gau_EventsAfterReportingPeriodMember_12"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NonadjustingEventsMember" xlink:label="loc_ifrs-full_NonadjustingEventsMember_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ClassesOfFinancialInstrumentsAxis" xlink:label="loc_ifrs-full_ClassesOfFinancialInstrumentsAxis_16"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ClassesOfFinancialInstrumentsMember" xlink:label="loc_ifrs-full_ClassesOfFinancialInstrumentsMember_16"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_OfftakeAgreementMember" xlink:label="loc_gau_OfftakeAgreementMember_16"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ClassesOfFinancialInstrumentsMember" xlink:label="loc_ifrs-full_ClassesOfFinancialInstrumentsMember_Default"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RedemptionDateAxis" xlink:label="loc_gau_RedemptionDateAxis_20"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RedemptionDateDomain" xlink:label="loc_gau_RedemptionDateDomain_20"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RedeemablePreferenceSharesWithNoFixedRedemptionDateMember" xlink:label="loc_gau_RedeemablePreferenceSharesWithNoFixedRedemptionDateMember_20"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RedemptionDateDomain" xlink:label="loc_gau_RedemptionDateDomain_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesAxis" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_24"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForSubsidiariesMember" xlink:label="loc_ifrs-full_EntitysTotalForSubsidiariesMember_24"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_JVFincoMember" xlink:label="loc_gau_JVFincoMember_24"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForSubsidiariesMember" xlink:label="loc_ifrs-full_EntitysTotalForSubsidiariesMember_Default"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_PercentageOfInterestAccountedForUsingEquityMethod" xlink:label="loc_gau_PercentageOfInterestAccountedForUsingEquityMethod_29"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AnnuallyServicesRenderedFee" xlink:label="loc_gau_AnnuallyServicesRenderedFee_30"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AnnuallyServicesRenderedFeeExcludingInflation" xlink:label="loc_gau_AnnuallyServicesRenderedFeeExcludingInflation_31"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_NetEarningsInJV" xlink:label="loc_gau_NetEarningsInJV_32"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ReversalOfImpairmentLoss" xlink:label="loc_ifrs-full_ReversalOfImpairmentLoss_33"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ImpairmentLossOnMineralPropertiesPlantAndEquipment" xlink:label="loc_gau_ImpairmentLossOnMineralPropertiesPlantAndEquipment_34"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ImpairmentOfInvestmentInJointVenture" xlink:label="loc_gau_ImpairmentOfInvestmentInJointVenture_35"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ShareOfImpairmentLossInJointVentures" xlink:label="loc_gau_ShareOfImpairmentLossInJointVentures_36"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ShareOfProfitLossOfJointVenturesAccountedForUsingEquityMethod" xlink:label="loc_ifrs-full_ShareOfProfitLossOfJointVenturesAccountedForUsingEquityMethod_37"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_FaceValueOfPreferenceSharesSubscribedComparedParValue" xlink:label="loc_gau_FaceValueOfPreferenceSharesSubscribedComparedParValue_38"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_PercentageOfSaleOfFutureGoldProduction" xlink:label="loc_gau_PercentageOfSaleOfFutureGoldProduction_39"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_MaximumAmountOfSaleOfFutureGoldProduction" xlink:label="loc_gau_MaximumAmountOfSaleOfFutureGoldProduction_40"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_PercentageOfPaymentForValueOfGold" xlink:label="loc_gau_PercentageOfPaymentForValueOfGold_41"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ProvisionalPaymentPercentOfEstimatedValue" xlink:label="loc_gau_ProvisionalPaymentPercentOfEstimatedValue_42"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AmountOfGoldSoldInPeriod" xlink:label="loc_gau_AmountOfGoldSoldInPeriod_43"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AmountOfGoldDeliveredInPeriod" xlink:label="loc_gau_AmountOfGoldDeliveredInPeriod_44"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AmountOfGoldDeliveredUnderAgreement" xlink:label="loc_gau_AmountOfGoldDeliveredUnderAgreement_45"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RevenueFromSaleOfSilver" xlink:label="loc_ifrs-full_RevenueFromSaleOfSilver_46"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AdditionalSaleOfGoldRelatedToPreProductionActivities" xlink:label="loc_gau_AdditionalSaleOfGoldRelatedToPreProductionActivities_47"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ProductionCostPercentageIncurred" xlink:label="loc_gau_ProductionCostPercentageIncurred_48"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AdjustmentToCarryingValueOfStockpileInventory" xlink:label="loc_gau_AdjustmentToCarryingValueOfStockpileInventory_49"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_WriteDownOfStockpileInventory" xlink:label="loc_gau_WriteDownOfStockpileInventory_50"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ProductionCostOfStockpileInventory" xlink:label="loc_gau_ProductionCostOfStockpileInventory_51"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DepreciationExpense" xlink:label="loc_ifrs-full_DepreciationExpense_52"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_PercentOfGrossRevenueRoyaltyPayable" xlink:label="loc_gau_PercentOfGrossRevenueRoyaltyPayable_53"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AdditionalPercentageOfNetSmelterReturnRoyaltyPayable" xlink:label="loc_gau_AdditionalPercentageOfNetSmelterReturnRoyaltyPayable_54"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AdditionalPercentageOfNetSmelterReturnRoyaltyPayableToCommittee" xlink:label="loc_gau_AdditionalPercentageOfNetSmelterReturnRoyaltyPayableToCommittee_55"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RecoverableAmountOfAssetOrCashgeneratingUnit" xlink:label="loc_ifrs-full_RecoverableAmountOfAssetOrCashgeneratingUnit_56"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_CarryingValueOfCashGeneratingUnit" xlink:label="loc_gau_CarryingValueOfCashGeneratingUnit_57"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_FairValueOfMineralResources" xlink:label="loc_gau_FairValueOfMineralResources_58"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_GainsLossesRecognisedWhenControlInSubsidiaryIsLost" xlink:label="loc_ifrs-full_GainsLossesRecognisedWhenControlInSubsidiaryIsLost_59"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DeferredTaxExpenseIncome" xlink:label="loc_ifrs-full_DeferredTaxExpenseIncome_60"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ImpairmentAdjustment" xlink:label="loc_gau_ImpairmentAdjustment_61"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_InitialSecurityReclamationDeposit" xlink:label="loc_gau_InitialSecurityReclamationDeposit_62"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_LongtermDeposits" xlink:label="loc_ifrs-full_LongtermDeposits_63"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ReclamationDepositBankGuarantee" xlink:label="loc_gau_ReclamationDepositBankGuarantee_64"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ValueOfReclamationDepositIncludingAccruedInterest" xlink:label="loc_gau_ValueOfReclamationDepositIncludingAccruedInterest_65"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_InitialSecurityReclamationDepositForEsaaseDeposit" xlink:label="loc_gau_InitialSecurityReclamationDepositForEsaaseDeposit_66"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_LongtermDepositsForEsaaseDeposit" xlink:label="loc_gau_LongtermDepositsForEsaaseDeposit_67"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_CashReclamationDeposit" xlink:label="loc_gau_CashReclamationDeposit_68"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_InitialSecurityReclamationDepositForObotanDeposit" xlink:label="loc_gau_InitialSecurityReclamationDepositForObotanDeposit_69"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_LongtermDepositsForObotanDeposit" xlink:label="loc_gau_LongtermDepositsForObotanDeposit_70"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ReclamationDepositBankGuaranteeForObotanDeposit" xlink:label="loc_gau_ReclamationDepositBankGuaranteeForObotanDeposit_71"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AdditionalCashReclamationDeposit" xlink:label="loc_gau_AdditionalCashReclamationDeposit_72"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AdditionsToMineralPropertiesPlantAndEquipment" xlink:label="loc_gau_AdditionsToMineralPropertiesPlantAndEquipment_73"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_PropertyAcquisitionCostsAndExplorationCosts" xlink:label="loc_gau_PropertyAcquisitionCostsAndExplorationCosts_74"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DeferredStrippingCostsToDepletableMineralInterests" xlink:label="loc_gau_DeferredStrippingCostsToDepletableMineralInterests_75"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_SeveranceExpenses" xlink:label="loc_gau_SeveranceExpenses_76"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DepletionExpenseChargedOnDeferredStrippingAssetsAndRecordedAsDepreciationAndDepletionExpense" xlink:label="loc_gau_DepletionExpenseChargedOnDeferredStrippingAssetsAndRecordedAsDepreciationAndDepletionExpense_77"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DepreciationInvestmentProperty" xlink:label="loc_ifrs-full_DepreciationInvestmentProperty_78"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DepreciationAndDepletionExpenseAllocatedToCostOfInventories" xlink:label="loc_gau_DepreciationAndDepletionExpenseAllocatedToCostOfInventories_79"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RevolvingCreditFacility" xlink:label="loc_gau_RevolvingCreditFacility_80"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RevolvingCreditFacilityRemainingBorrowingCapacity" xlink:label="loc_gau_RevolvingCreditFacilityRemainingBorrowingCapacity_81"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RevolvingCreditFacilityInterestDescription" xlink:label="loc_gau_RevolvingCreditFacilityInterestDescription_82"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_CommitmentFeesUndrawnPortionScale" xlink:label="loc_gau_CommitmentFeesUndrawnPortionScale_83"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_InterestExpenseAndOtherFeesForRevolvingCreditFacility" xlink:label="loc_gau_InterestExpenseAndOtherFeesForRevolvingCreditFacility_84"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_HedgingInstrumentsGoldProductionDescription" xlink:label="loc_gau_HedgingInstrumentsGoldProductionDescription_85"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RealizedLossOnHedgingInstruments" xlink:label="loc_gau_RealizedLossOnHedgingInstruments_86"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DepositAsCollateralOnGoldCollars" xlink:label="loc_gau_DepositAsCollateralOnGoldCollars_87"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_LongTermRiskFreeDiscountRateForReclamationCost" xlink:label="loc_gau_LongTermRiskFreeDiscountRateForReclamationCost_88"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_WithholdingTaxes" xlink:label="loc_gau_WithholdingTaxes_89"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DamagesSoughtValue" xlink:label="loc_gau_DamagesSoughtValue_90"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_LegalProceedingsProvision" xlink:label="loc_ifrs-full_LegalProceedingsProvision_91"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfUsefulLifePropertyPlantAndEquipment" xlink:label="loc_ifrs-full_DescriptionOfUsefulLifePropertyPlantAndEquipment_92"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ProductionOfGold" xlink:label="loc_gau_ProductionOfGold_93"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EstimatedFairValueLessCostOfDisposal" xlink:label="loc_gau_EstimatedFairValueLessCostOfDisposal_94"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfDiscountRatesAppliedToCashFlowProjections" xlink:label="loc_ifrs-full_DescriptionOfDiscountRatesAppliedToCashFlowProjections_95"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_FairValueOfMeasuredAndIndicatedResources" xlink:label="loc_gau_FairValueOfMeasuredAndIndicatedResources_96"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EstimatedRestructuringCosts" xlink:label="loc_gau_EstimatedRestructuringCosts_97"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ReducedCarryingValueOfInvestmentAssociate" xlink:label="loc_gau_ReducedCarryingValueOfInvestmentAssociate_98"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_FaceValueOfPreferenceSharesSubscribed" xlink:label="loc_gau_FaceValueOfPreferenceSharesSubscribed_99"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RecoverableAmountOfAsankoGoldMine" xlink:label="loc_gau_RecoverableAmountOfAsankoGoldMine_100"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfJointVenturesTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesTable_1" xlink:to="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" xlink:to="loc_gau_AsankoGoldMineMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" xlink:to="loc_gau_AdansiGoldCompanyGhanaLimitedMember_2" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" xlink:to="loc_gau_ShikaGroupFinanceLimitedMember_3" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesTable_1" xlink:to="loc_dei_LegalEntityAxis_7" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_7" xlink:to="loc_dei_EntityDomain_7" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_7" xlink:to="loc_gau_RkMineFinanceTrustIMember_7" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_7" xlink:to="loc_gau_RandMerchantBankMember_8" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_7" xlink:to="loc_dei_EntityDomain_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesTable_1" xlink:to="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_12" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_12" xlink:to="loc_ifrs-full_NonadjustingEventsMember_12" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_NonadjustingEventsMember_12" xlink:to="loc_gau_EventsAfterReportingPeriodMember_12" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_12" xlink:to="loc_ifrs-full_NonadjustingEventsMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesTable_1" xlink:to="loc_ifrs-full_ClassesOfFinancialInstrumentsAxis_16" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfFinancialInstrumentsAxis_16" xlink:to="loc_ifrs-full_ClassesOfFinancialInstrumentsMember_16" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialInstrumentsMember_16" xlink:to="loc_gau_OfftakeAgreementMember_16" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfFinancialInstrumentsAxis_16" xlink:to="loc_ifrs-full_ClassesOfFinancialInstrumentsMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesTable_1" xlink:to="loc_gau_RedemptionDateAxis_20" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gau_RedemptionDateAxis_20" xlink:to="loc_gau_RedemptionDateDomain_20" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_RedemptionDateDomain_20" xlink:to="loc_gau_RedeemablePreferenceSharesWithNoFixedRedemptionDateMember_20" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gau_RedemptionDateAxis_20" xlink:to="loc_gau_RedemptionDateDomain_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesTable_1" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_24" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_24" xlink:to="loc_ifrs-full_EntitysTotalForSubsidiariesMember_24" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForSubsidiariesMember_24" xlink:to="loc_gau_JVFincoMember_24" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_24" xlink:to="loc_ifrs-full_EntitysTotalForSubsidiariesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_PercentageOfInterestAccountedForUsingEquityMethod_29" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_AnnuallyServicesRenderedFee_30" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_AnnuallyServicesRenderedFeeExcludingInflation_31" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_NetEarningsInJV_32" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_ifrs-full_ReversalOfImpairmentLoss_33" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_ImpairmentLossOnMineralPropertiesPlantAndEquipment_34" order="60" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_ImpairmentOfInvestmentInJointVenture_35" order="70" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_ShareOfImpairmentLossInJointVentures_36" order="80" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_ifrs-full_ShareOfProfitLossOfJointVenturesAccountedForUsingEquityMethod_37" order="90" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_FaceValueOfPreferenceSharesSubscribedComparedParValue_38" order="100" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_PercentageOfSaleOfFutureGoldProduction_39" order="110" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_MaximumAmountOfSaleOfFutureGoldProduction_40" order="120" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_PercentageOfPaymentForValueOfGold_41" order="130" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_ProvisionalPaymentPercentOfEstimatedValue_42" order="140" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_AmountOfGoldSoldInPeriod_43" order="150" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_AmountOfGoldDeliveredInPeriod_44" order="160" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_AmountOfGoldDeliveredUnderAgreement_45" order="170" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_ifrs-full_RevenueFromSaleOfSilver_46" order="180" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_AdditionalSaleOfGoldRelatedToPreProductionActivities_47" order="190" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_ProductionCostPercentageIncurred_48" order="200" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_AdjustmentToCarryingValueOfStockpileInventory_49" order="210" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_WriteDownOfStockpileInventory_50" order="220" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_ProductionCostOfStockpileInventory_51" order="230" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_ifrs-full_DepreciationExpense_52" order="240" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_PercentOfGrossRevenueRoyaltyPayable_53" order="250" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_AdditionalPercentageOfNetSmelterReturnRoyaltyPayable_54" order="260" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_AdditionalPercentageOfNetSmelterReturnRoyaltyPayableToCommittee_55" order="270" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_ifrs-full_RecoverableAmountOfAssetOrCashgeneratingUnit_56" order="280" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_CarryingValueOfCashGeneratingUnit_57" order="290" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_FairValueOfMineralResources_58" order="300" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_ifrs-full_GainsLossesRecognisedWhenControlInSubsidiaryIsLost_59" order="310" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_ifrs-full_DeferredTaxExpenseIncome_60" order="320" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_ImpairmentAdjustment_61" order="330" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_InitialSecurityReclamationDeposit_62" order="340" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_ifrs-full_LongtermDeposits_63" order="350" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_ReclamationDepositBankGuarantee_64" order="360" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_ValueOfReclamationDepositIncludingAccruedInterest_65" order="370" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_InitialSecurityReclamationDepositForEsaaseDeposit_66" order="380" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_LongtermDepositsForEsaaseDeposit_67" order="390" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_CashReclamationDeposit_68" order="400" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_InitialSecurityReclamationDepositForObotanDeposit_69" order="410" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_LongtermDepositsForObotanDeposit_70" order="420" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_ReclamationDepositBankGuaranteeForObotanDeposit_71" order="430" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_AdditionalCashReclamationDeposit_72" order="440" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_AdditionsToMineralPropertiesPlantAndEquipment_73" order="450" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_PropertyAcquisitionCostsAndExplorationCosts_74" order="460" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_DeferredStrippingCostsToDepletableMineralInterests_75" order="470" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_SeveranceExpenses_76" order="480" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_DepletionExpenseChargedOnDeferredStrippingAssetsAndRecordedAsDepreciationAndDepletionExpense_77" order="490" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_ifrs-full_DepreciationInvestmentProperty_78" order="500" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_DepreciationAndDepletionExpenseAllocatedToCostOfInventories_79" order="510" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_RevolvingCreditFacility_80" order="520" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_RevolvingCreditFacilityRemainingBorrowingCapacity_81" order="530" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_RevolvingCreditFacilityInterestDescription_82" order="540" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_CommitmentFeesUndrawnPortionScale_83" order="550" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_InterestExpenseAndOtherFeesForRevolvingCreditFacility_84" order="560" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_HedgingInstrumentsGoldProductionDescription_85" order="570" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_RealizedLossOnHedgingInstruments_86" order="580" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_DepositAsCollateralOnGoldCollars_87" order="590" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_LongTermRiskFreeDiscountRateForReclamationCost_88" order="600" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_WithholdingTaxes_89" order="610" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_DamagesSoughtValue_90" order="620" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_ifrs-full_LegalProceedingsProvision_91" order="630" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_ifrs-full_DescriptionOfUsefulLifePropertyPlantAndEquipment_92" order="640" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_ProductionOfGold_93" order="650" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_EstimatedFairValueLessCostOfDisposal_94" order="660" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_ifrs-full_DescriptionOfDiscountRatesAppliedToCashFlowProjections_95" order="670" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_FairValueOfMeasuredAndIndicatedResources_96" order="680" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_EstimatedRestructuringCosts_97" order="690" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_ReducedCarryingValueOfInvestmentAssociate_98" order="700" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_FaceValueOfPreferenceSharesSubscribed_99" order="710" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_RecoverableAmountOfAsankoGoldMine_100" order="720" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/DisclosureDisclosureOfFinancialRiskManagementExplanatoryDetails">
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_CapitalManagementLineItems" xlink:label="loc_gau_CapitalManagementLineItems_0"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_CapitalManagementTable" xlink:label="loc_gau_CapitalManagementTable_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AgreementAxis" xlink:label="loc_gau_AgreementAxis_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AgreementDomain" xlink:label="loc_gau_AgreementDomain_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AtMarketOfferingMember" xlink:label="loc_gau_AtMarketOfferingMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AgreementDomain" xlink:label="loc_gau_AgreementDomain_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_5"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_5"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_HcWainwrightAndCompanyAndCormarkSecuritiesMember" xlink:label="loc_gau_HcWainwrightAndCompanyAndCormarkSecuritiesMember_5"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EquityAttributableToOwnersOfParent" xlink:label="loc_ifrs-full_EquityAttributableToOwnersOfParent_10"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ValueOfSharesApprovedUnderAtMarketOffering" xlink:label="loc_gau_ValueOfSharesApprovedUnderAtMarketOffering_11"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_gau_CapitalManagementLineItems_0" xlink:to="loc_gau_CapitalManagementTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gau_CapitalManagementTable_1" xlink:to="loc_gau_AgreementAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gau_AgreementAxis_1" xlink:to="loc_gau_AgreementDomain_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_AgreementDomain_1" xlink:to="loc_gau_AtMarketOfferingMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gau_AgreementAxis_1" xlink:to="loc_gau_AgreementDomain_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gau_CapitalManagementTable_1" xlink:to="loc_dei_LegalEntityAxis_5" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_5" xlink:to="loc_dei_EntityDomain_5" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_5" xlink:to="loc_gau_HcWainwrightAndCompanyAndCormarkSecuritiesMember_5" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_5" xlink:to="loc_dei_EntityDomain_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_CapitalManagementLineItems_0" xlink:to="loc_ifrs-full_EquityAttributableToOwnersOfParent_10" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_CapitalManagementLineItems_0" xlink:to="loc_gau_ValueOfSharesApprovedUnderAtMarketOffering_11" order="20" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/DisclosureDisclosureOfFairValueOfFinancialInstrumentsExplanatoryDetails">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinancialInstrumentsLineItems" xlink:label="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinancialInstrumentsTable" xlink:label="loc_ifrs-full_DisclosureOfFinancialInstrumentsTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ClassesOfFinancialLiabilitiesAxis" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinancialLiabilitiesMember" xlink:label="loc_ifrs-full_FinancialLiabilitiesMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinancialLiabilitiesAtFairValueMember" xlink:label="loc_ifrs-full_FinancialLiabilitiesAtFairValueMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrencySwapContractMember" xlink:label="loc_ifrs-full_CurrencySwapContractMember_2"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ForwardContractMember" xlink:label="loc_ifrs-full_ForwardContractMember_3"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinancialLiabilitiesMember" xlink:label="loc_ifrs-full_FinancialLiabilitiesMember_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TypesOfRisksAxis" xlink:label="loc_ifrs-full_TypesOfRisksAxis_7"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TypesOfRisksMember" xlink:label="loc_ifrs-full_TypesOfRisksMember_7"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CreditRiskMember" xlink:label="loc_ifrs-full_CreditRiskMember_7"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InterestRateRiskMember" xlink:label="loc_ifrs-full_InterestRateRiskMember_8"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrencyRiskMember" xlink:label="loc_ifrs-full_CurrencyRiskMember_9"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CommodityPriceRiskMember" xlink:label="loc_ifrs-full_CommodityPriceRiskMember_10"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TypesOfRisksMember" xlink:label="loc_ifrs-full_TypesOfRisksMember_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_JointVenturesAxis" xlink:label="loc_ifrs-full_JointVenturesAxis_14"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForJointVenturesMember" xlink:label="loc_ifrs-full_EntitysTotalForJointVenturesMember_14"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_JointVenturesMember" xlink:label="loc_ifrs-full_JointVenturesMember_14"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForJointVenturesMember" xlink:label="loc_ifrs-full_EntitysTotalForJointVenturesMember_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ClassesOfShareCapitalAxis" xlink:label="loc_ifrs-full_ClassesOfShareCapitalAxis_18"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ClassesOfShareCapitalMember" xlink:label="loc_ifrs-full_ClassesOfShareCapitalMember_18"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PreferenceSharesMember" xlink:label="loc_ifrs-full_PreferenceSharesMember_18"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ClassesOfShareCapitalMember" xlink:label="loc_ifrs-full_ClassesOfShareCapitalMember_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ReceivablesDueFromJointVentures" xlink:label="loc_ifrs-full_ReceivablesDueFromJointVentures_23"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InterestReceivable" xlink:label="loc_ifrs-full_InterestReceivable_24"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherReceivables" xlink:label="loc_ifrs-full_OtherReceivables_25"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_PreferenceSharesRedeemableShareSubscribed" xlink:label="loc_gau_PreferenceSharesRedeemableShareSubscribed_26"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_MaximumExposureToCreditRisk" xlink:label="loc_ifrs-full_MaximumExposureToCreditRisk_27"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashAndCashEquivalents" xlink:label="loc_ifrs-full_CashAndCashEquivalents_28"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentLiabilities" xlink:label="loc_ifrs-full_CurrentLiabilities_29"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_IncreaseInAfterTaxNetLossDueToChangeInAnnualizedInterest" xlink:label="loc_gau_IncreaseInAfterTaxNetLossDueToChangeInAnnualizedInterest_30"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DecreaseInAfterTaxNetLossDueToChangeInAnnualizedInterestRate" xlink:label="loc_gau_DecreaseInAfterTaxNetLossDueToChangeInAnnualizedInterestRate_31"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_MineralResourcesOuncesOfGold" xlink:label="loc_gau_MineralResourcesOuncesOfGold_32"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ValueAtRisk" xlink:label="loc_ifrs-full_ValueAtRisk_33"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_PreferenceSharesValueDeterminingCreditRisk" xlink:label="loc_gau_PreferenceSharesValueDeterminingCreditRisk_34"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ValueOfPreferenceSharesRelatedToCreditRisk" xlink:label="loc_gau_ValueOfPreferenceSharesRelatedToCreditRisk_35"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ReceivablesFromPreciousMetalSales" xlink:label="loc_gau_ReceivablesFromPreciousMetalSales_36"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentReceivablesDueFromJointVentures" xlink:label="loc_ifrs-full_NoncurrentReceivablesDueFromJointVentures_37"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_PrincipalRepaymentsOfAmendedTermSheet" xlink:label="loc_gau_PrincipalRepaymentsOfAmendedTermSheet_38"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_BorrowingsInterestRateBasis" xlink:label="loc_ifrs-full_BorrowingsInterestRateBasis_39"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DerivativeFinancialLiabilities" xlink:label="loc_ifrs-full_DerivativeFinancialLiabilities_40"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfFinancialInstrumentsTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsTable_1" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_1" xlink:to="loc_ifrs-full_FinancialLiabilitiesMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_FinancialLiabilitiesMember_1" xlink:to="loc_ifrs-full_FinancialLiabilitiesAtFairValueMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_FinancialLiabilitiesMember_1" xlink:to="loc_ifrs-full_CurrencySwapContractMember_2" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_FinancialLiabilitiesMember_1" xlink:to="loc_ifrs-full_ForwardContractMember_3" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_1" xlink:to="loc_ifrs-full_FinancialLiabilitiesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsTable_1" xlink:to="loc_ifrs-full_TypesOfRisksAxis_7" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_TypesOfRisksAxis_7" xlink:to="loc_ifrs-full_TypesOfRisksMember_7" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfRisksMember_7" xlink:to="loc_ifrs-full_CreditRiskMember_7" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfRisksMember_7" xlink:to="loc_ifrs-full_InterestRateRiskMember_8" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfRisksMember_7" xlink:to="loc_ifrs-full_CurrencyRiskMember_9" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfRisksMember_7" xlink:to="loc_ifrs-full_CommodityPriceRiskMember_10" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_TypesOfRisksAxis_7" xlink:to="loc_ifrs-full_TypesOfRisksMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsTable_1" xlink:to="loc_ifrs-full_JointVenturesAxis_14" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_JointVenturesAxis_14" xlink:to="loc_ifrs-full_EntitysTotalForJointVenturesMember_14" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForJointVenturesMember_14" xlink:to="loc_ifrs-full_JointVenturesMember_14" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_JointVenturesAxis_14" xlink:to="loc_ifrs-full_EntitysTotalForJointVenturesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsTable_1" xlink:to="loc_ifrs-full_ClassesOfShareCapitalAxis_18" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfShareCapitalAxis_18" xlink:to="loc_ifrs-full_ClassesOfShareCapitalMember_18" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfShareCapitalMember_18" xlink:to="loc_ifrs-full_PreferenceSharesMember_18" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfShareCapitalAxis_18" xlink:to="loc_ifrs-full_ClassesOfShareCapitalMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_ifrs-full_ReceivablesDueFromJointVentures_23" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_ifrs-full_InterestReceivable_24" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_ifrs-full_OtherReceivables_25" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_gau_PreferenceSharesRedeemableShareSubscribed_26" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_ifrs-full_MaximumExposureToCreditRisk_27" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_ifrs-full_CashAndCashEquivalents_28" order="60" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_ifrs-full_CurrentLiabilities_29" order="70" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_gau_IncreaseInAfterTaxNetLossDueToChangeInAnnualizedInterest_30" order="80" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_gau_DecreaseInAfterTaxNetLossDueToChangeInAnnualizedInterestRate_31" order="90" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_gau_MineralResourcesOuncesOfGold_32" order="100" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_ifrs-full_ValueAtRisk_33" order="110" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_gau_PreferenceSharesValueDeterminingCreditRisk_34" order="120" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_gau_ValueOfPreferenceSharesRelatedToCreditRisk_35" order="130" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_gau_ReceivablesFromPreciousMetalSales_36" order="140" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_ifrs-full_NoncurrentReceivablesDueFromJointVentures_37" order="150" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_gau_PrincipalRepaymentsOfAmendedTermSheet_38" order="160" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_ifrs-full_BorrowingsInterestRateBasis_39" order="170" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_ifrs-full_DerivativeFinancialLiabilities_40" order="180" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/DisclosureDisclosureOfSignificantInvestmentsInSubsidiariesExplanatoryDetails">
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsLineItems" xlink:label="loc_gau_StatementsLineItems_0"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsTable" xlink:label="loc_gau_StatementsTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesAxis" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForSubsidiariesMember" xlink:label="loc_ifrs-full_EntitysTotalForSubsidiariesMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_GalianoGoldSouthAfricaPtyLtdMember" xlink:label="loc_gau_GalianoGoldSouthAfricaPtyLtdMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_GalianoInternationalIsleOfManLimitedMember" xlink:label="loc_gau_GalianoInternationalIsleOfManLimitedMember_2"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_GalianoGoldIsleOfManLimitedMember" xlink:label="loc_gau_GalianoGoldIsleOfManLimitedMember_3"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_GalianoGoldMaliExplorationSarlMember" xlink:label="loc_gau_GalianoGoldMaliExplorationSarlMember_4"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AsankoGoldExplorationGhanaLimitedMember" xlink:label="loc_gau_AsankoGoldExplorationGhanaLimitedMember_5"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AsankoGoldGhanaLimitedMember" xlink:label="loc_gau_AsankoGoldGhanaLimitedMember_6"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AdansiGoldCompanyGhanaLimitedMember" xlink:label="loc_gau_AdansiGoldCompanyGhanaLimitedMember_7"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ShikaGroupFinanceLimitedMember" xlink:label="loc_gau_ShikaGroupFinanceLimitedMember_8"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForSubsidiariesMember" xlink:label="loc_ifrs-full_EntitysTotalForSubsidiariesMember_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProportionOfOwnershipInterestInSubsidiary" xlink:label="loc_ifrs-full_ProportionOfOwnershipInterestInSubsidiary_13"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProportionOfOwnershipInterestInJointVenture" xlink:label="loc_ifrs-full_ProportionOfOwnershipInterestInJointVenture_14"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_StatementsTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gau_StatementsTable_1" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForSubsidiariesMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForSubsidiariesMember_1" xlink:to="loc_gau_GalianoGoldSouthAfricaPtyLtdMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForSubsidiariesMember_1" xlink:to="loc_gau_GalianoInternationalIsleOfManLimitedMember_2" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForSubsidiariesMember_1" xlink:to="loc_gau_GalianoGoldIsleOfManLimitedMember_3" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForSubsidiariesMember_1" xlink:to="loc_gau_GalianoGoldMaliExplorationSarlMember_4" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForSubsidiariesMember_1" xlink:to="loc_gau_AsankoGoldExplorationGhanaLimitedMember_5" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForSubsidiariesMember_1" xlink:to="loc_gau_AsankoGoldGhanaLimitedMember_6" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForSubsidiariesMember_1" xlink:to="loc_gau_AdansiGoldCompanyGhanaLimitedMember_7" order="60" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForSubsidiariesMember_1" xlink:to="loc_gau_ShikaGroupFinanceLimitedMember_8" order="70" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForSubsidiariesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_ifrs-full_ProportionOfOwnershipInterestInSubsidiary_13" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_ifrs-full_ProportionOfOwnershipInterestInJointVenture_14" order="20" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/DisclosureDisclosureOfDetailedInformationAboutEstimatedUsefulLifeOrDepreciationRateExplanatoryDetails">
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsLineItems" xlink:label="loc_gau_StatementsLineItems_0"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsTable" xlink:label="loc_gau_StatementsTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis" xlink:label="loc_ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PropertyPlantAndEquipmentMember" xlink:label="loc_ifrs-full_PropertyPlantAndEquipmentMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_FixedPlantAndRelatedComponentsAndInfrastructureMember" xlink:label="loc_gau_FixedPlantAndRelatedComponentsAndInfrastructureMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_MiningPropertyMember" xlink:label="loc_ifrs-full_MiningPropertyMember_2"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ComputerEquipmentMember" xlink:label="loc_ifrs-full_ComputerEquipmentMember_3"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RightofuseAssetsMember" xlink:label="loc_ifrs-full_RightofuseAssetsMember_4"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PropertyPlantAndEquipmentMember" xlink:label="loc_ifrs-full_PropertyPlantAndEquipmentMember_Default"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_UsefulLivesOrDepreciationRatesEquipment" xlink:label="loc_gau_UsefulLivesOrDepreciationRatesEquipment_9"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_StatementsTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gau_StatementsTable_1" xlink:to="loc_ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis_1" xlink:to="loc_ifrs-full_PropertyPlantAndEquipmentMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_PropertyPlantAndEquipmentMember_1" xlink:to="loc_gau_FixedPlantAndRelatedComponentsAndInfrastructureMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_PropertyPlantAndEquipmentMember_1" xlink:to="loc_ifrs-full_MiningPropertyMember_2" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_PropertyPlantAndEquipmentMember_1" xlink:to="loc_ifrs-full_ComputerEquipmentMember_3" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_PropertyPlantAndEquipmentMember_1" xlink:to="loc_ifrs-full_RightofuseAssetsMember_4" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis_1" xlink:to="loc_ifrs-full_PropertyPlantAndEquipmentMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_UsefulLivesOrDepreciationRatesEquipment_9" order="10" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/DisclosureDisclosureOfDeferredTaxesExplanatoryDetails">
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DisclosureOfIncomeTaxLineItems" xlink:label="loc_gau_DisclosureOfIncomeTaxLineItems_0"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DisclosureOfIncomeTaxTable" xlink:label="loc_gau_DisclosureOfIncomeTaxTable_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsAxis" xlink:label="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsAxis_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsDomain" xlink:label="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsDomain_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_LeaseLiabilityMember" xlink:label="loc_gau_LeaseLiabilityMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RightOfUseAssetMember" xlink:label="loc_gau_RightOfUseAssetMember_2"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsDomain" xlink:label="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsDomain_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DeferredTaxAssets" xlink:label="loc_ifrs-full_DeferredTaxAssets_7"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DeferredTaxLiabilities" xlink:label="loc_ifrs-full_DeferredTaxLiabilities_8"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NetDeferredTaxAssets" xlink:label="loc_ifrs-full_NetDeferredTaxAssets_9"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NetDeferredTaxLiabilities" xlink:label="loc_ifrs-full_NetDeferredTaxLiabilities_10"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_gau_DisclosureOfIncomeTaxLineItems_0" xlink:to="loc_gau_DisclosureOfIncomeTaxTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gau_DisclosureOfIncomeTaxTable_1" xlink:to="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsAxis_1" xlink:to="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsDomain_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsDomain_1" xlink:to="loc_gau_LeaseLiabilityMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsDomain_1" xlink:to="loc_gau_RightOfUseAssetMember_2" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsAxis_1" xlink:to="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsDomain_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_DisclosureOfIncomeTaxLineItems_0" xlink:to="loc_ifrs-full_DeferredTaxAssets_7" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_DisclosureOfIncomeTaxLineItems_0" xlink:to="loc_ifrs-full_DeferredTaxLiabilities_8" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_DisclosureOfIncomeTaxLineItems_0" xlink:to="loc_ifrs-full_NetDeferredTaxAssets_9" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_DisclosureOfIncomeTaxLineItems_0" xlink:to="loc_ifrs-full_NetDeferredTaxLiabilities_10" order="40" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/DisclosureDisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatoryDetails">
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DisclosureOfIncomeTaxLineItems" xlink:label="loc_gau_DisclosureOfIncomeTaxLineItems_0"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DisclosureOfIncomeTaxTable" xlink:label="loc_gau_DisclosureOfIncomeTaxTable_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsAxis" xlink:label="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsAxis_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsDomain" xlink:label="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsDomain_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherPropertyPlantAndEquipmentMember" xlink:label="loc_ifrs-full_OtherPropertyPlantAndEquipmentMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ShareIssuanceCostsMember" xlink:label="loc_gau_ShareIssuanceCostsMember_2"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_InvestmentInAssociateMember" xlink:label="loc_gau_InvestmentInAssociateMember_3"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AccountsPayablesAndAccruedLiabilitiesMember" xlink:label="loc_gau_AccountsPayablesAndAccruedLiabilitiesMember_4"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_LeaseLiabilityMember" xlink:label="loc_gau_LeaseLiabilityMember_5"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_CapitalLossesMember" xlink:label="loc_gau_CapitalLossesMember_6"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_UnusedTaxCreditsMember" xlink:label="loc_ifrs-full_UnusedTaxCreditsMember_7"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ForeignExchangeLossCarriedForwardMember" xlink:label="loc_gau_ForeignExchangeLossCarriedForwardMember_8"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_MineralInterestsMember" xlink:label="loc_gau_MineralInterestsMember_9"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ContingentLiabilityForDecommissioningRestorationAndRehabilitationCostsMember" xlink:label="loc_ifrs-full_ContingentLiabilityForDecommissioningRestorationAndRehabilitationCostsMember_10"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_UnrealisedForeignExchangeGainsLossesMember" xlink:label="loc_ifrs-full_UnrealisedForeignExchangeGainsLossesMember_11"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsDomain" xlink:label="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsDomain_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised" xlink:label="loc_ifrs-full_DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised_16"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_gau_DisclosureOfIncomeTaxLineItems_0" xlink:to="loc_gau_DisclosureOfIncomeTaxTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gau_DisclosureOfIncomeTaxTable_1" xlink:to="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsAxis_1" xlink:to="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsDomain_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsDomain_1" xlink:to="loc_ifrs-full_OtherPropertyPlantAndEquipmentMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsDomain_1" xlink:to="loc_gau_ShareIssuanceCostsMember_2" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsDomain_1" xlink:to="loc_gau_InvestmentInAssociateMember_3" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsDomain_1" xlink:to="loc_gau_AccountsPayablesAndAccruedLiabilitiesMember_4" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsDomain_1" xlink:to="loc_gau_LeaseLiabilityMember_5" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsDomain_1" xlink:to="loc_gau_CapitalLossesMember_6" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsDomain_1" xlink:to="loc_ifrs-full_UnusedTaxCreditsMember_7" order="60" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsDomain_1" xlink:to="loc_gau_ForeignExchangeLossCarriedForwardMember_8" order="70" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsDomain_1" xlink:to="loc_gau_MineralInterestsMember_9" order="80" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsDomain_1" xlink:to="loc_ifrs-full_ContingentLiabilityForDecommissioningRestorationAndRehabilitationCostsMember_10" order="90" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsDomain_1" xlink:to="loc_ifrs-full_UnrealisedForeignExchangeGainsLossesMember_11" order="100" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsAxis_1" xlink:to="loc_gau_SignificantComponentsOfDeferredTaxLiabilitiesAndAssetsDomain_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_DisclosureOfIncomeTaxLineItems_0" xlink:to="loc_ifrs-full_DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised_16" order="10" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/DisclosureOfDetailedInformatonAboutRedeemablePreferenceSharesWithNoFixedRedemptionDateDetails">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinancialAssetsLineItems" xlink:label="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinancialAssetsTable" xlink:label="loc_ifrs-full_DisclosureOfFinancialAssetsTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesAxis" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForSubsidiariesMember" xlink:label="loc_ifrs-full_EntitysTotalForSubsidiariesMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_JVFincoMember" xlink:label="loc_gau_JVFincoMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForSubsidiariesMember" xlink:label="loc_ifrs-full_EntitysTotalForSubsidiariesMember_Default"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_PreferenceSharesHeldAxis" xlink:label="loc_gau_PreferenceSharesHeldAxis_5"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_PreferenceSharesHeldDomain" xlink:label="loc_gau_PreferenceSharesHeldDomain_5"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_PreferenceSharesHeldInJointVentureMember" xlink:label="loc_gau_PreferenceSharesHeldInJointVentureMember_5"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_PreferenceSharesHeldDomain" xlink:label="loc_gau_PreferenceSharesHeldDomain_Default"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_NumberOfPreferenceShares" xlink:label="loc_gau_NumberOfPreferenceShares_10"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinancialAssets" xlink:label="loc_ifrs-full_FinancialAssets_11"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RecognitionOfPreferredSharesAtFairValue" xlink:label="loc_gau_RecognitionOfPreferredSharesAtFairValue_12"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_FairValueAdjustmentRedeemablePreferenceShares" xlink:label="loc_gau_FairValueAdjustmentRedeemablePreferenceShares_13"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RedemptionOfPreferredSharesDuringYearShares" xlink:label="loc_gau_RedemptionOfPreferredSharesDuringYearShares_14"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RedemptionOfPreferredSharesAmount" xlink:label="loc_gau_RedemptionOfPreferredSharesAmount_15"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfFinancialAssetsTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsTable_1" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForSubsidiariesMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForSubsidiariesMember_1" xlink:to="loc_gau_JVFincoMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForSubsidiariesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsTable_1" xlink:to="loc_gau_PreferenceSharesHeldAxis_5" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gau_PreferenceSharesHeldAxis_5" xlink:to="loc_gau_PreferenceSharesHeldDomain_5" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_PreferenceSharesHeldDomain_5" xlink:to="loc_gau_PreferenceSharesHeldInJointVentureMember_5" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gau_PreferenceSharesHeldAxis_5" xlink:to="loc_gau_PreferenceSharesHeldDomain_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_0" xlink:to="loc_gau_NumberOfPreferenceShares_10" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_0" xlink:to="loc_ifrs-full_FinancialAssets_11" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_0" xlink:to="loc_gau_RecognitionOfPreferredSharesAtFairValue_12" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_0" xlink:to="loc_gau_FairValueAdjustmentRedeemablePreferenceShares_13" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_0" xlink:to="loc_gau_RedemptionOfPreferredSharesDuringYearShares_14" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_0" xlink:to="loc_gau_RedemptionOfPreferredSharesAmount_15" order="60" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/DisclosureDisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsExplanatoryDetails">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReservesWithinEquityLineItems" xlink:label="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReservesWithinEquityTable" xlink:label="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsAxis" xlink:label="loc_ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsMember" xlink:label="loc_ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_CZeroZeroZeroCOneZeroZeroMember" xlink:label="loc_gau_CZeroZeroZeroCOneZeroZeroMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_COneZeroZeroCTwoZeroZeroMember" xlink:label="loc_gau_COneZeroZeroCTwoZeroZeroMember_2"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_CTwoZeroOneCThreeZeroZeroMember" xlink:label="loc_gau_CTwoZeroOneCThreeZeroZeroMember_3"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_CThreeZeroOneCFourZeroZeroMember" xlink:label="loc_gau_CThreeZeroOneCFourZeroZeroMember_4"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_CFourZeroOneCFiveZeroZeroMember" xlink:label="loc_gau_CFourZeroOneCFiveZeroZeroMember_5"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_CSixZeroOneCSevenZeroZeroMember" xlink:label="loc_gau_CSixZeroOneCSevenZeroZeroMember_6"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsMember" xlink:label="loc_ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsMember_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RangeAxis" xlink:label="loc_ifrs-full_RangeAxis_10"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RangesMember" xlink:label="loc_ifrs-full_RangesMember_10"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_BottomOfRangeMember" xlink:label="loc_ifrs-full_BottomOfRangeMember_10"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TopOfRangeMember" xlink:label="loc_ifrs-full_TopOfRangeMember_11"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RangesMember" xlink:label="loc_ifrs-full_RangesMember_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ExercisePriceOfOutstandingShareOptions2019" xlink:label="loc_ifrs-full_ExercisePriceOfOutstandingShareOptions2019_16"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NumberOfOutstandingShareOptions" xlink:label="loc_ifrs-full_NumberOfOutstandingShareOptions_17"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_WeightedAverageRemainingContractualLifeOfOutstandingShareOptions2019" xlink:label="loc_ifrs-full_WeightedAverageRemainingContractualLifeOfOutstandingShareOptions2019_18"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement2019" xlink:label="loc_ifrs-full_WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement2019_19"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NumberOfShareOptionsExercisableInSharebasedPaymentArrangement" xlink:label="loc_ifrs-full_NumberOfShareOptionsExercisableInSharebasedPaymentArrangement_20"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_WeightedAverageRemainingContractualLifeOfExercisableShareOptions" xlink:label="loc_gau_WeightedAverageRemainingContractualLifeOfExercisableShareOptions_21"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_WeightedAverageExercisePriceOfShareOptionsExercisableInSharebasedPaymentArrangement2019" xlink:label="loc_ifrs-full_WeightedAverageExercisePriceOfShareOptionsExercisableInSharebasedPaymentArrangement2019_22"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1" xlink:to="loc_ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsAxis_1" xlink:to="loc_ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsMember_1" xlink:to="loc_gau_CZeroZeroZeroCOneZeroZeroMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsMember_1" xlink:to="loc_gau_COneZeroZeroCTwoZeroZeroMember_2" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsMember_1" xlink:to="loc_gau_CTwoZeroOneCThreeZeroZeroMember_3" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsMember_1" xlink:to="loc_gau_CThreeZeroOneCFourZeroZeroMember_4" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsMember_1" xlink:to="loc_gau_CFourZeroOneCFiveZeroZeroMember_5" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsMember_1" xlink:to="loc_gau_CSixZeroOneCSevenZeroZeroMember_6" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsAxis_1" xlink:to="loc_ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1" xlink:to="loc_ifrs-full_RangeAxis_10" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_RangeAxis_10" xlink:to="loc_ifrs-full_RangesMember_10" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_RangesMember_10" xlink:to="loc_ifrs-full_BottomOfRangeMember_10" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_RangesMember_10" xlink:to="loc_ifrs-full_TopOfRangeMember_11" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_RangeAxis_10" xlink:to="loc_ifrs-full_RangesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_ExercisePriceOfOutstandingShareOptions2019_16" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_NumberOfOutstandingShareOptions_17" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_WeightedAverageRemainingContractualLifeOfOutstandingShareOptions2019_18" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement2019_19" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_NumberOfShareOptionsExercisableInSharebasedPaymentArrangement_20" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_WeightedAverageRemainingContractualLifeOfExercisableShareOptions_21" order="60" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_WeightedAverageExercisePriceOfShareOptionsExercisableInSharebasedPaymentArrangement2019_22" order="70" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/DisclosureDisclosureOfDetailedInformationAboutCommitmentsExplanatoryTableTextBlockDetails">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfContingentLiabilitiesLineItems" xlink:label="loc_ifrs-full_DisclosureOfContingentLiabilitiesLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfContingentLiabilitiesTable" xlink:label="loc_ifrs-full_DisclosureOfContingentLiabilitiesTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_MaturityAxis" xlink:label="loc_ifrs-full_MaturityAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AggregatedTimeBandsMember" xlink:label="loc_ifrs-full_AggregatedTimeBandsMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NotLaterThanOneYearMember" xlink:label="loc_ifrs-full_NotLaterThanOneYearMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_LaterThanOneYearAndNotLaterThanFiveYearsMember" xlink:label="loc_ifrs-full_LaterThanOneYearAndNotLaterThanFiveYearsMember_2"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_LaterThanFiveYearsMember" xlink:label="loc_ifrs-full_LaterThanFiveYearsMember_3"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AggregatedTimeBandsMember" xlink:label="loc_ifrs-full_AggregatedTimeBandsMember_Default"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AccountsPayableAndAccruedLiabilitieExcludingCommitments" xlink:label="loc_gau_AccountsPayableAndAccruedLiabilitieExcludingCommitments_8"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_LongTermIncentivePlanCashSettledAwardsContractualObligationsExcludingCommitments" xlink:label="loc_gau_LongTermIncentivePlanCashSettledAwardsContractualObligationsExcludingCommitments_9"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_CorporateOperatingLeases" xlink:label="loc_gau_CorporateOperatingLeases_10"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ContractualObligations" xlink:label="loc_gau_ContractualObligations_11"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfContingentLiabilitiesLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfContingentLiabilitiesTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfContingentLiabilitiesTable_1" xlink:to="loc_ifrs-full_MaturityAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_MaturityAxis_1" xlink:to="loc_ifrs-full_AggregatedTimeBandsMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_AggregatedTimeBandsMember_1" xlink:to="loc_ifrs-full_NotLaterThanOneYearMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_AggregatedTimeBandsMember_1" xlink:to="loc_ifrs-full_LaterThanOneYearAndNotLaterThanFiveYearsMember_2" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_AggregatedTimeBandsMember_1" xlink:to="loc_ifrs-full_LaterThanFiveYearsMember_3" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_MaturityAxis_1" xlink:to="loc_ifrs-full_AggregatedTimeBandsMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfContingentLiabilitiesLineItems_0" xlink:to="loc_gau_AccountsPayableAndAccruedLiabilitieExcludingCommitments_8" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfContingentLiabilitiesLineItems_0" xlink:to="loc_gau_LongTermIncentivePlanCashSettledAwardsContractualObligationsExcludingCommitments_9" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfContingentLiabilitiesLineItems_0" xlink:to="loc_gau_CorporateOperatingLeases_10" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfContingentLiabilitiesLineItems_0" xlink:to="loc_gau_ContractualObligations_11" order="40" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/DisclosureOfDetailedInformationAboutInvestmentInJointVentureUsingEquityMethodDetails">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AsankoGoldMineMember" xlink:label="loc_gau_AsankoGoldMineMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InvestmentsInJointVentures" xlink:label="loc_ifrs-full_InvestmentsInJointVentures_6"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ShareOfProfitLossOfJointVenturesAccountedForUsingEquityMethod" xlink:label="loc_ifrs-full_ShareOfProfitLossOfJointVenturesAccountedForUsingEquityMethod_7"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ImpairmentOfInvestmentInJointVenture" xlink:label="loc_gau_ImpairmentOfInvestmentInJointVenture_8"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1" xlink:to="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" xlink:to="loc_gau_AsankoGoldMineMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_InvestmentsInJointVentures_6" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_ShareOfProfitLossOfJointVenturesAccountedForUsingEquityMethod_7" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_gau_ImpairmentOfInvestmentInJointVenture_8" order="30" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/DisclosureOfDetailedInformationAboutStatementOfOperationsOfJointVentureDetails">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AsankoGoldMineMember" xlink:label="loc_gau_AsankoGoldMineMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Revenue" xlink:label="loc_ifrs-full_Revenue_6"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ProductionCost" xlink:label="loc_gau_ProductionCost_7"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DepreciationAndAmortisationExpense" xlink:label="loc_ifrs-full_DepreciationAndAmortisationExpense_8"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RoyaltyExpense" xlink:label="loc_ifrs-full_RoyaltyExpense_9"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_IncomeArisingFromProducingMineralProperties" xlink:label="loc_gau_IncomeArisingFromProducingMineralProperties_10"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ImpairmentOfExplorationAndEvaluationAssets" xlink:label="loc_gau_ImpairmentOfExplorationAndEvaluationAssets_11"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ExpenseArisingFromExplorationForAndEvaluationOfMineralResources" xlink:label="loc_ifrs-full_ExpenseArisingFromExplorationForAndEvaluationOfMineralResources_12"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SellingGeneralAndAdministrativeExpense" xlink:label="loc_ifrs-full_SellingGeneralAndAdministrativeExpense_13"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLossFromOperatingActivities" xlink:label="loc_ifrs-full_ProfitLossFromOperatingActivities_14"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinanceCosts" xlink:label="loc_ifrs-full_FinanceCosts_15"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinanceIncome" xlink:label="loc_ifrs-full_FinanceIncome_16"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NetForeignExchangeGain" xlink:label="loc_ifrs-full_NetForeignExchangeGain_17"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLossBeforeTax" xlink:label="loc_ifrs-full_ProfitLossBeforeTax_18"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentTaxExpenseIncome" xlink:label="loc_ifrs-full_CurrentTaxExpenseIncome_19"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DeferredTaxExpenseIncome" xlink:label="loc_ifrs-full_DeferredTaxExpenseIncome_20"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLoss" xlink:label="loc_ifrs-full_ProfitLoss_21"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ShareOfProfitLossOfJointVenturesAccountedForUsingEquityMethod" xlink:label="loc_ifrs-full_ShareOfProfitLossOfJointVenturesAccountedForUsingEquityMethod_22"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1" xlink:to="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" xlink:to="loc_gau_AsankoGoldMineMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_Revenue_6" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_gau_ProductionCost_7" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_DepreciationAndAmortisationExpense_8" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_RoyaltyExpense_9" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_gau_IncomeArisingFromProducingMineralProperties_10" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_gau_ImpairmentOfExplorationAndEvaluationAssets_11" order="60" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_ExpenseArisingFromExplorationForAndEvaluationOfMineralResources_12" order="70" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_SellingGeneralAndAdministrativeExpense_13" order="80" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_ProfitLossFromOperatingActivities_14" order="90" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_FinanceCosts_15" order="100" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_FinanceIncome_16" order="110" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_NetForeignExchangeGain_17" order="120" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_ProfitLossBeforeTax_18" order="130" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_CurrentTaxExpenseIncome_19" order="140" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_DeferredTaxExpenseIncome_20" order="150" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_ProfitLoss_21" order="160" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_ShareOfProfitLossOfJointVenturesAccountedForUsingEquityMethod_22" order="170" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/DisclosureOfDetailedInformationAboutProductionCostsOfJointVentureDetails">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AsankoGoldMineMember" xlink:label="loc_gau_AsankoGoldMineMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RawMaterialsAndConsumablesUsed" xlink:label="loc_ifrs-full_RawMaterialsAndConsumablesUsed_6"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_WagesAndSalaries" xlink:label="loc_ifrs-full_WagesAndSalaries_7"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ContractorsCostsNetOfDeferredStrippingCosts" xlink:label="loc_gau_ContractorsCostsNetOfDeferredStrippingCosts_8"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CostOfInventoriesRecognisedAsExpenseDuringPeriod" xlink:label="loc_ifrs-full_CostOfInventoriesRecognisedAsExpenseDuringPeriod_9"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherExpenseByNature" xlink:label="loc_ifrs-full_OtherExpenseByNature_10"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees" xlink:label="loc_ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees_11"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ProductionCost" xlink:label="loc_gau_ProductionCost_12"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1" xlink:to="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" xlink:to="loc_gau_AsankoGoldMineMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_RawMaterialsAndConsumablesUsed_6" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_WagesAndSalaries_7" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_gau_ContractorsCostsNetOfDeferredStrippingCosts_8" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_CostOfInventoriesRecognisedAsExpenseDuringPeriod_9" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_OtherExpenseByNature_10" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees_11" order="60" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_gau_ProductionCost_12" order="70" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/DisclosureOfDetailedInformationAboutAfterTaxAmountRecognizedInRecordsOfAgmOfJointVentureDetails">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AsankoGoldMineMember" xlink:label="loc_gau_AsankoGoldMineMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_LossOfControlOfSubsidiariesAllocatedToMineralPropertiesPlantAndEquipment" xlink:label="loc_gau_LossOfControlOfSubsidiariesAllocatedToMineralPropertiesPlantAndEquipment_6"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_LossOfControlOfSubsidiariesAllocatedToDeferredIncomeTaxLiability" xlink:label="loc_gau_LossOfControlOfSubsidiariesAllocatedToDeferredIncomeTaxLiability_7"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_NetAssetsDerecognized" xlink:label="loc_gau_NetAssetsDerecognized_8"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AcceleratedAccretionOnLongTermDebt" xlink:label="loc_gau_AcceleratedAccretionOnLongTermDebt_9"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_TransactionCostsRelatedToJointVenture" xlink:label="loc_gau_TransactionCostsRelatedToJointVenture_10"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_GainsLossesRecognisedWhenControlInSubsidiaryIsLost" xlink:label="loc_ifrs-full_GainsLossesRecognisedWhenControlInSubsidiaryIsLost_11"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1" xlink:to="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" xlink:to="loc_gau_AsankoGoldMineMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_gau_LossOfControlOfSubsidiariesAllocatedToMineralPropertiesPlantAndEquipment_6" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_gau_LossOfControlOfSubsidiariesAllocatedToDeferredIncomeTaxLiability_7" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_gau_NetAssetsDerecognized_8" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_gau_AcceleratedAccretionOnLongTermDebt_9" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_gau_TransactionCostsRelatedToJointVenture_10" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_GainsLossesRecognisedWhenControlInSubsidiaryIsLost_11" order="60" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/InvestmentinJointVentureDetails1">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AsankoGoldMineMember" xlink:label="loc_gau_AsankoGoldMineMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AssetsAbstract" xlink:label="loc_ifrs-full_AssetsAbstract_6"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentAssetsAbstract" xlink:label="loc_ifrs-full_CurrentAssetsAbstract_6"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashAndCashEquivalents" xlink:label="loc_ifrs-full_CashAndCashEquivalents_6"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RestrictedCashAndCashEquivalents" xlink:label="loc_ifrs-full_RestrictedCashAndCashEquivalents_7"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TradeAndOtherCurrentReceivables" xlink:label="loc_ifrs-full_TradeAndOtherCurrentReceivables_8"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Inventories" xlink:label="loc_ifrs-full_Inventories_9"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentPrepaidExpenses" xlink:label="loc_ifrs-full_CurrentPrepaidExpenses_10"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentFinancialAssetsAvailableforsale" xlink:label="loc_ifrs-full_CurrentFinancialAssetsAvailableforsale_11"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentTaxAssetsCurrent" xlink:label="loc_ifrs-full_CurrentTaxAssetsCurrent_12"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentAssets" xlink:label="loc_ifrs-full_CurrentAssets_13"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentAssets" xlink:label="loc_ifrs-full_NoncurrentAssets_15"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Assets" xlink:label="loc_ifrs-full_Assets_16"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_LiabilitiesAbstract" xlink:label="loc_ifrs-full_LiabilitiesAbstract_18"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentLiabilitiesAbstract" xlink:label="loc_ifrs-full_CurrentLiabilitiesAbstract_18"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TradeAndOtherCurrentPayables" xlink:label="loc_ifrs-full_TradeAndOtherCurrentPayables_18"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentDebtInstrumentsIssued" xlink:label="loc_ifrs-full_CurrentDebtInstrumentsIssued_19"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentLeaseLiabilities" xlink:label="loc_ifrs-full_CurrentLeaseLiabilities_20"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ShorttermProvisionForDecommissioningRestorationAndRehabilitationCosts" xlink:label="loc_ifrs-full_ShorttermProvisionForDecommissioningRestorationAndRehabilitationCosts_21"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentLiabilities" xlink:label="loc_ifrs-full_CurrentLiabilities_22"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentLiabilitiesAbstract" xlink:label="loc_ifrs-full_NoncurrentLiabilitiesAbstract_24"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentLeaseLiabilities" xlink:label="loc_ifrs-full_NoncurrentLeaseLiabilities_24"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_LongTermIncentivePlanCashSettled" xlink:label="loc_gau_LongTermIncentivePlanCashSettled_25"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DeferredTaxLiabilities" xlink:label="loc_ifrs-full_DeferredTaxLiabilities_26"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_LongtermProvisionForDecommissioningRestorationAndRehabilitationCosts" xlink:label="loc_ifrs-full_LongtermProvisionForDecommissioningRestorationAndRehabilitationCosts_27"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentLiabilities" xlink:label="loc_ifrs-full_NoncurrentLiabilities_28"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Liabilities" xlink:label="loc_ifrs-full_Liabilities_30"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Equity" xlink:label="loc_ifrs-full_Equity_31"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EquityAndLiabilities" xlink:label="loc_ifrs-full_EquityAndLiabilities_32"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1" xlink:to="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" xlink:to="loc_gau_AsankoGoldMineMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_AssetsAbstract_6" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_AssetsAbstract_6" xlink:to="loc_ifrs-full_CurrentAssetsAbstract_6" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_CurrentAssetsAbstract_6" xlink:to="loc_ifrs-full_CashAndCashEquivalents_6" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_CurrentAssetsAbstract_6" xlink:to="loc_ifrs-full_RestrictedCashAndCashEquivalents_7" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_CurrentAssetsAbstract_6" xlink:to="loc_ifrs-full_TradeAndOtherCurrentReceivables_8" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_CurrentAssetsAbstract_6" xlink:to="loc_ifrs-full_Inventories_9" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_CurrentAssetsAbstract_6" xlink:to="loc_ifrs-full_CurrentPrepaidExpenses_10" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_CurrentAssetsAbstract_6" xlink:to="loc_ifrs-full_CurrentFinancialAssetsAvailableforsale_11" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_CurrentAssetsAbstract_6" xlink:to="loc_ifrs-full_CurrentTaxAssetsCurrent_12" order="60" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_CurrentAssetsAbstract_6" xlink:to="loc_ifrs-full_CurrentAssets_13" order="70" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_AssetsAbstract_6" xlink:to="loc_ifrs-full_NoncurrentAssets_15" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_AssetsAbstract_6" xlink:to="loc_ifrs-full_Assets_16" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_LiabilitiesAbstract_18" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_LiabilitiesAbstract_18" xlink:to="loc_ifrs-full_CurrentLiabilitiesAbstract_18" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_CurrentLiabilitiesAbstract_18" xlink:to="loc_ifrs-full_TradeAndOtherCurrentPayables_18" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_CurrentLiabilitiesAbstract_18" xlink:to="loc_ifrs-full_CurrentDebtInstrumentsIssued_19" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_CurrentLiabilitiesAbstract_18" xlink:to="loc_ifrs-full_CurrentLeaseLiabilities_20" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_CurrentLiabilitiesAbstract_18" xlink:to="loc_ifrs-full_ShorttermProvisionForDecommissioningRestorationAndRehabilitationCosts_21" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_CurrentLiabilitiesAbstract_18" xlink:to="loc_ifrs-full_CurrentLiabilities_22" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_LiabilitiesAbstract_18" xlink:to="loc_ifrs-full_NoncurrentLiabilitiesAbstract_24" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_NoncurrentLiabilitiesAbstract_24" xlink:to="loc_ifrs-full_NoncurrentLeaseLiabilities_24" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_NoncurrentLiabilitiesAbstract_24" xlink:to="loc_gau_LongTermIncentivePlanCashSettled_25" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_NoncurrentLiabilitiesAbstract_24" xlink:to="loc_ifrs-full_DeferredTaxLiabilities_26" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_NoncurrentLiabilitiesAbstract_24" xlink:to="loc_ifrs-full_LongtermProvisionForDecommissioningRestorationAndRehabilitationCosts_27" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_NoncurrentLiabilitiesAbstract_24" xlink:to="loc_ifrs-full_NoncurrentLiabilities_28" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_LiabilitiesAbstract_18" xlink:to="loc_ifrs-full_Liabilities_30" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_LiabilitiesAbstract_18" xlink:to="loc_ifrs-full_Equity_31" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_LiabilitiesAbstract_18" xlink:to="loc_ifrs-full_EquityAndLiabilities_32" order="40" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/InvestmentinJointVentureDetails2">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AsankoGoldMineMember" xlink:label="loc_gau_AsankoGoldMineMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinishedGoods" xlink:label="loc_ifrs-full_FinishedGoods_6"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_WorkInProgress" xlink:label="loc_ifrs-full_WorkInProgress_7"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentOreStockpiles" xlink:label="loc_ifrs-full_CurrentOreStockpiles_8"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SpareParts" xlink:label="loc_ifrs-full_SpareParts_9"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InventoriesTotal" xlink:label="loc_ifrs-full_InventoriesTotal_10"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentOreStockpiles" xlink:label="loc_ifrs-full_NoncurrentOreStockpiles_11"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Inventories" xlink:label="loc_ifrs-full_Inventories_12"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1" xlink:to="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" xlink:to="loc_gau_AsankoGoldMineMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_FinishedGoods_6" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_WorkInProgress_7" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_CurrentOreStockpiles_8" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_SpareParts_9" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_InventoriesTotal_10" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_NoncurrentOreStockpiles_11" order="60" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_Inventories_12" order="70" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/InvestmentinJointVentureDetails3">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AsankoGoldMineMember" xlink:label="loc_gau_AsankoGoldMineMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProvisionForDecommissioningRestorationAndRehabilitationCosts" xlink:label="loc_ifrs-full_ProvisionForDecommissioningRestorationAndRehabilitationCosts_6"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ProvisionForDecommissioningRestorationAndRehabilitationCostsAccretionExpense" xlink:label="loc_gau_ProvisionForDecommissioningRestorationAndRehabilitationCostsAccretionExpense_7"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ProvisionForDecommissioningRestorationAndRehabilitationCostsChangeInObligation" xlink:label="loc_gau_ProvisionForDecommissioningRestorationAndRehabilitationCostsChangeInObligation_8"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ReclamationUndertakenDuringYear" xlink:label="loc_gau_ReclamationUndertakenDuringYear_9"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ShorttermProvisionForDecommissioningRestorationAndRehabilitationCosts" xlink:label="loc_ifrs-full_ShorttermProvisionForDecommissioningRestorationAndRehabilitationCosts_10"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_LongtermProvisionForDecommissioningRestorationAndRehabilitationCosts" xlink:label="loc_ifrs-full_LongtermProvisionForDecommissioningRestorationAndRehabilitationCosts_11"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1" xlink:to="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" xlink:to="loc_gau_AsankoGoldMineMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_ProvisionForDecommissioningRestorationAndRehabilitationCosts_6" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_gau_ProvisionForDecommissioningRestorationAndRehabilitationCostsAccretionExpense_7" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_gau_ProvisionForDecommissioningRestorationAndRehabilitationCostsChangeInObligation_8" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_gau_ReclamationUndertakenDuringYear_9" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_ShorttermProvisionForDecommissioningRestorationAndRehabilitationCosts_10" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_LongtermProvisionForDecommissioningRestorationAndRehabilitationCosts_11" order="60" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/InvestmentinJointVentureDetails4">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AsankoGoldMineMember" xlink:label="loc_gau_AsankoGoldMineMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital_6"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities_7"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:label="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities_8"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:label="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities_9"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents" xlink:label="loc_ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents_10"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:label="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents_11"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashAndCashEquivalents" xlink:label="loc_ifrs-full_CashAndCashEquivalents_12"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_CashAndCashEquivalentsAndRestrictedCash" xlink:label="loc_gau_CashAndCashEquivalentsAndRestrictedCash_13"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1" xlink:to="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" xlink:to="loc_gau_AsankoGoldMineMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital_6" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities_7" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities_8" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities_9" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents_10" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents_11" order="60" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_CashAndCashEquivalents_12" order="70" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_gau_CashAndCashEquivalentsAndRestrictedCash_13" order="80" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/DisclosureDisclosureOfGeographicAllocationOfTotalAssetsAndLiabilitiesExplanatoryTableTextBlockDetails">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfOperatingSegmentsLineItems" xlink:label="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfOperatingSegmentsTable" xlink:label="loc_ifrs-full_DisclosureOfOperatingSegmentsTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_GeographicalAreasAxis" xlink:label="loc_ifrs-full_GeographicalAreasAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_GeographicalAreasMember" xlink:label="loc_ifrs-full_GeographicalAreasMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2022/country-2022.xsd#country_CA" xlink:label="loc_country_CA_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_AfricaMember" xlink:label="loc_srt_AfricaMember_2"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_GeographicalAreasMember" xlink:label="loc_ifrs-full_GeographicalAreasMember_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentAssets" xlink:label="loc_ifrs-full_CurrentAssets_7"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_PropertyPlantAndEquipmentAndRightOfUseAssets" xlink:label="loc_gau_PropertyPlantAndEquipmentAndRightOfUseAssets_8"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherNoncurrentAssets" xlink:label="loc_ifrs-full_OtherNoncurrentAssets_9"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Assets" xlink:label="loc_ifrs-full_Assets_10"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentLiabilities" xlink:label="loc_ifrs-full_CurrentLiabilities_11"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentLiabilities" xlink:label="loc_ifrs-full_NoncurrentLiabilities_12"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Liabilities" xlink:label="loc_ifrs-full_Liabilities_13"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfOperatingSegmentsTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsTable_1" xlink:to="loc_ifrs-full_GeographicalAreasAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_GeographicalAreasAxis_1" xlink:to="loc_ifrs-full_GeographicalAreasMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_GeographicalAreasMember_1" xlink:to="loc_country_CA_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_GeographicalAreasMember_1" xlink:to="loc_srt_AfricaMember_2" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_GeographicalAreasAxis_1" xlink:to="loc_ifrs-full_GeographicalAreasMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_0" xlink:to="loc_ifrs-full_CurrentAssets_7" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_0" xlink:to="loc_gau_PropertyPlantAndEquipmentAndRightOfUseAssets_8" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_0" xlink:to="loc_ifrs-full_OtherNoncurrentAssets_9" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_0" xlink:to="loc_ifrs-full_Assets_10" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_0" xlink:to="loc_ifrs-full_CurrentLiabilities_11" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_0" xlink:to="loc_ifrs-full_NoncurrentLiabilities_12" order="60" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_0" xlink:to="loc_ifrs-full_Liabilities_13" order="70" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/DisclosureDisclosureOfGeographicAllocationOfTheStatementOfOperationsAndComprehensiveIncomeLossExplanatoryTableTextBlockDetails">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfOperatingSegmentsLineItems" xlink:label="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfOperatingSegmentsTable" xlink:label="loc_ifrs-full_DisclosureOfOperatingSegmentsTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_GeographicalAreasAxis" xlink:label="loc_ifrs-full_GeographicalAreasAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_GeographicalAreasMember" xlink:label="loc_ifrs-full_GeographicalAreasMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2022/country-2022.xsd#country_CA" xlink:label="loc_country_CA_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_AfricaMember" xlink:label="loc_srt_AfricaMember_2"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_GeographicalAreasMember" xlink:label="loc_ifrs-full_GeographicalAreasMember_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xlink:label="loc_ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod_7"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ServiceFeeIncomeNetEarnedAsOperatorsOfJointVenture" xlink:label="loc_gau_ServiceFeeIncomeNetEarnedAsOperatorsOfJointVenture_8"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SellingGeneralAndAdministrativeExpense" xlink:label="loc_ifrs-full_SellingGeneralAndAdministrativeExpense_9"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ExpenseArisingFromExplorationForAndEvaluationOfMineralResources" xlink:label="loc_ifrs-full_ExpenseArisingFromExplorationForAndEvaluationOfMineralResources_10"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLossFromOperatingActivities" xlink:label="loc_ifrs-full_ProfitLossFromOperatingActivities_11"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ImpairmentLoss" xlink:label="loc_ifrs-full_ImpairmentLoss_12"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ImpairmentOfExplorationAndEvaluationAssets" xlink:label="loc_gau_ImpairmentOfExplorationAndEvaluationAssets_13"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinanceIncome" xlink:label="loc_ifrs-full_FinanceIncome_14"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinanceCosts" xlink:label="loc_ifrs-full_FinanceCosts_15"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss" xlink:label="loc_ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss_16"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ComprehensiveIncome" xlink:label="loc_ifrs-full_ComprehensiveIncome_17"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfOperatingSegmentsTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsTable_1" xlink:to="loc_ifrs-full_GeographicalAreasAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_GeographicalAreasAxis_1" xlink:to="loc_ifrs-full_GeographicalAreasMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_GeographicalAreasMember_1" xlink:to="loc_country_CA_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_GeographicalAreasMember_1" xlink:to="loc_srt_AfricaMember_2" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_GeographicalAreasAxis_1" xlink:to="loc_ifrs-full_GeographicalAreasMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_0" xlink:to="loc_ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod_7" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_0" xlink:to="loc_gau_ServiceFeeIncomeNetEarnedAsOperatorsOfJointVenture_8" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_0" xlink:to="loc_ifrs-full_SellingGeneralAndAdministrativeExpense_9" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_0" xlink:to="loc_ifrs-full_ExpenseArisingFromExplorationForAndEvaluationOfMineralResources_10" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_0" xlink:to="loc_ifrs-full_ProfitLossFromOperatingActivities_11" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_0" xlink:to="loc_ifrs-full_ImpairmentLoss_12" order="60" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_0" xlink:to="loc_gau_ImpairmentOfExplorationAndEvaluationAssets_13" order="70" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_0" xlink:to="loc_ifrs-full_FinanceIncome_14" order="80" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_0" xlink:to="loc_ifrs-full_FinanceCosts_15" order="90" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_0" xlink:to="loc_ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss_16" order="100" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_0" xlink:to="loc_ifrs-full_ComprehensiveIncome_17" order="110" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/DisclosureDisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsExplanatoryDetails">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinancialInstrumentsLineItems" xlink:label="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinancialInstrumentsTable" xlink:label="loc_ifrs-full_DisclosureOfFinancialInstrumentsTable_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AmountsHeldInForeignCurrenciesAxis" xlink:label="loc_gau_AmountsHeldInForeignCurrenciesAxis_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AmountsHeldInForeignCurrenciesDomain" xlink:label="loc_gau_AmountsHeldInForeignCurrenciesDomain_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/currency/2022/currency-2022.xsd#currency_CAD" xlink:label="loc_currency_CAD_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/currency/2022/currency-2022.xsd#currency_GHS" xlink:label="loc_currency_GHS_2"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/currency/2022/currency-2022.xsd#currency_ZAR" xlink:label="loc_currency_ZAR_3"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/currency/2022/currency-2022.xsd#currency_XOF" xlink:label="loc_currency_XOF_4"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/currency/2022/currency-2022.xsd#currency_USD" xlink:label="loc_currency_USD_5"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AmountsHeldInForeignCurrenciesDomain" xlink:label="loc_gau_AmountsHeldInForeignCurrenciesDomain_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TypesOfRisksAxis" xlink:label="loc_ifrs-full_TypesOfRisksAxis_9"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TypesOfRisksMember" xlink:label="loc_ifrs-full_TypesOfRisksMember_9"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrencyRiskMember" xlink:label="loc_ifrs-full_CurrencyRiskMember_9"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TypesOfRisksMember" xlink:label="loc_ifrs-full_TypesOfRisksMember_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashAndCashEquivalents" xlink:label="loc_ifrs-full_CashAndCashEquivalents_14"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TradeAndOtherCurrentReceivables" xlink:label="loc_ifrs-full_TradeAndOtherCurrentReceivables_15"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TradeAndOtherCurrentPayables" xlink:label="loc_ifrs-full_TradeAndOtherCurrentPayables_16"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RestrictedStockUnitLiability" xlink:label="loc_gau_RestrictedStockUnitLiability_17"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherNoncurrentFinancialLiabilities" xlink:label="loc_ifrs-full_OtherNoncurrentFinancialLiabilities_18"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_LeaseLiabilities" xlink:label="loc_ifrs-full_LeaseLiabilities_19"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ValueAtRisk" xlink:label="loc_ifrs-full_ValueAtRisk_20"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfFinancialInstrumentsTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsTable_1" xlink:to="loc_gau_AmountsHeldInForeignCurrenciesAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gau_AmountsHeldInForeignCurrenciesAxis_1" xlink:to="loc_gau_AmountsHeldInForeignCurrenciesDomain_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_AmountsHeldInForeignCurrenciesDomain_1" xlink:to="loc_currency_CAD_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_AmountsHeldInForeignCurrenciesDomain_1" xlink:to="loc_currency_GHS_2" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_AmountsHeldInForeignCurrenciesDomain_1" xlink:to="loc_currency_ZAR_3" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_AmountsHeldInForeignCurrenciesDomain_1" xlink:to="loc_currency_XOF_4" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_AmountsHeldInForeignCurrenciesDomain_1" xlink:to="loc_currency_USD_5" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gau_AmountsHeldInForeignCurrenciesAxis_1" xlink:to="loc_gau_AmountsHeldInForeignCurrenciesDomain_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsTable_1" xlink:to="loc_ifrs-full_TypesOfRisksAxis_9" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_TypesOfRisksAxis_9" xlink:to="loc_ifrs-full_TypesOfRisksMember_9" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfRisksMember_9" xlink:to="loc_ifrs-full_CurrencyRiskMember_9" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_TypesOfRisksAxis_9" xlink:to="loc_ifrs-full_TypesOfRisksMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_ifrs-full_CashAndCashEquivalents_14" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_ifrs-full_TradeAndOtherCurrentReceivables_15" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_ifrs-full_TradeAndOtherCurrentPayables_16" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_gau_RestrictedStockUnitLiability_17" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_ifrs-full_OtherNoncurrentFinancialLiabilities_18" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_ifrs-full_LeaseLiabilities_19" order="60" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_0" xlink:to="loc_ifrs-full_ValueAtRisk_20" order="70" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/SegmentedInformationNarrativeDetails">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfOperatingSegmentsLineItems" xlink:label="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfOperatingSegmentsTable" xlink:label="loc_ifrs-full_DisclosureOfOperatingSegmentsTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AsankoGoldMineMember" xlink:label="loc_gau_AsankoGoldMineMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_PercentageOfInterestAccountedForUsingEquityMethod" xlink:label="loc_gau_PercentageOfInterestAccountedForUsingEquityMethod_6"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfOperatingSegmentsTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsTable_1" xlink:to="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" xlink:to="loc_gau_AsankoGoldMineMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_0" xlink:to="loc_gau_PercentageOfInterestAccountedForUsingEquityMethod_6" order="10" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/IncomeTaxNarrativeDetails">
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DisclosureOfIncomeTaxLineItems" xlink:label="loc_gau_DisclosureOfIncomeTaxLineItems_0"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DisclosureOfIncomeTaxTable" xlink:label="loc_gau_DisclosureOfIncomeTaxTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_StatementGeographicalAxis" xlink:label="loc_srt_StatementGeographicalAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2022/country-2022.xsd#country_CA" xlink:label="loc_country_CA_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised" xlink:label="loc_ifrs-full_UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised_6"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TemporaryDifferencesAssociatedWithInvestmentsInSubsidiariesBranchesAndAssociatesAndInterestsInJointVentures" xlink:label="loc_ifrs-full_TemporaryDifferencesAssociatedWithInvestmentsInSubsidiariesBranchesAndAssociatesAndInterestsInJointVentures_7"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_gau_DisclosureOfIncomeTaxLineItems_0" xlink:to="loc_gau_DisclosureOfIncomeTaxTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gau_DisclosureOfIncomeTaxTable_1" xlink:to="loc_srt_StatementGeographicalAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_1" xlink:to="loc_srt_SegmentGeographicalDomain_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_1" xlink:to="loc_country_CA_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_1" xlink:to="loc_srt_SegmentGeographicalDomain_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_DisclosureOfIncomeTaxLineItems_0" xlink:to="loc_ifrs-full_UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised_6" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_DisclosureOfIncomeTaxLineItems_0" xlink:to="loc_ifrs-full_TemporaryDifferencesAssociatedWithInvestmentsInSubsidiariesBranchesAndAssociatesAndInterestsInJointVentures_7" order="20" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/ReceivableDueFromRelatedPartyDetailTextuals">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AgreementAxis" xlink:label="loc_gau_AgreementAxis_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AgreementDomain" xlink:label="loc_gau_AgreementDomain_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ServicesAgreementMember" xlink:label="loc_gau_ServicesAgreementMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AgreementDomain" xlink:label="loc_gau_AgreementDomain_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_JointVenturesAxis" xlink:label="loc_ifrs-full_JointVenturesAxis_5"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForJointVenturesMember" xlink:label="loc_ifrs-full_EntitysTotalForJointVenturesMember_5"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_JointVenturesMember" xlink:label="loc_ifrs-full_JointVenturesMember_5"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForJointVenturesMember" xlink:label="loc_ifrs-full_EntitysTotalForJointVenturesMember_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FeeAndCommissionIncome" xlink:label="loc_ifrs-full_FeeAndCommissionIncome_10"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_JvServiceFeePerAnnum" xlink:label="loc_gau_JvServiceFeePerAnnum_11"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_FeeAndCommissionIncomeBeforeAdjustmentsForInflation" xlink:label="loc_gau_FeeAndCommissionIncomeBeforeAdjustmentsForInflation_12"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ServiceFeeIncomeEarnedAsOperatorsOfJointVentureReceivable" xlink:label="loc_gau_ServiceFeeIncomeEarnedAsOperatorsOfJointVentureReceivable_13"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ServiceFeeIncomeGross" xlink:label="loc_gau_ServiceFeeIncomeGross_14"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_WithholdingTaxesIncurred" xlink:label="loc_gau_WithholdingTaxesIncurred_15"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AmountsReceivableRelatedPartyTransactions" xlink:label="loc_ifrs-full_AmountsReceivableRelatedPartyTransactions_16"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AmountsPayableRelatedPartyTransactions" xlink:label="loc_ifrs-full_AmountsPayableRelatedPartyTransactions_17"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1" xlink:to="loc_gau_AgreementAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gau_AgreementAxis_1" xlink:to="loc_gau_AgreementDomain_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_AgreementDomain_1" xlink:to="loc_gau_ServicesAgreementMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gau_AgreementAxis_1" xlink:to="loc_gau_AgreementDomain_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1" xlink:to="loc_ifrs-full_JointVenturesAxis_5" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_JointVenturesAxis_5" xlink:to="loc_ifrs-full_EntitysTotalForJointVenturesMember_5" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForJointVenturesMember_5" xlink:to="loc_ifrs-full_JointVenturesMember_5" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_JointVenturesAxis_5" xlink:to="loc_ifrs-full_EntitysTotalForJointVenturesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_FeeAndCommissionIncome_10" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_gau_JvServiceFeePerAnnum_11" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_gau_FeeAndCommissionIncomeBeforeAdjustmentsForInflation_12" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_gau_ServiceFeeIncomeEarnedAsOperatorsOfJointVentureReceivable_13" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_gau_ServiceFeeIncomeGross_14" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_gau_WithholdingTaxesIncurred_15" order="60" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_AmountsReceivableRelatedPartyTransactions_16" order="70" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_AmountsPayableRelatedPartyTransactions_17" order="80" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/InvestmentInJointVentureSensitivityAnalysisDetails">
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_InvestmentInJointVentureLineItems" xlink:label="loc_gau_InvestmentInJointVentureLineItems_0"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_InvestmentInJointVentureTable" xlink:label="loc_gau_InvestmentInJointVentureTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AsankoGoldMineMember" xlink:label="loc_gau_AsankoGoldMineMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_GoldPriceWeightedAverageSensitivityDescription" xlink:label="loc_gau_GoldPriceWeightedAverageSensitivityDescription_6"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_GoldPriceWeightedAverageIncreaseSensitivityImpactOnRecoverableAmount" xlink:label="loc_gau_GoldPriceWeightedAverageIncreaseSensitivityImpactOnRecoverableAmount_7"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_GoldPriceWeightedAverageDecreaseSensitivityImpactOnRecoverableAmount" xlink:label="loc_gau_GoldPriceWeightedAverageDecreaseSensitivityImpactOnRecoverableAmount_8"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DiscountRateSensitivityDescription" xlink:label="loc_gau_DiscountRateSensitivityDescription_9"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DiscountRateIncreaseSensitivityImpactOnRecoverableAmount" xlink:label="loc_gau_DiscountRateIncreaseSensitivityImpactOnRecoverableAmount_10"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DiscountRateDecreaseSensitivityImpactOnRecoverableAmount" xlink:label="loc_gau_DiscountRateDecreaseSensitivityImpactOnRecoverableAmount_11"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ValueOfMineralResourcesBeyondProvenAndProbableReservesWeightedAverageAssumptionSensitivity" xlink:label="loc_gau_ValueOfMineralResourcesBeyondProvenAndProbableReservesWeightedAverageAssumptionSensitivity_12"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_gau_InvestmentInJointVentureLineItems_0" xlink:to="loc_gau_InvestmentInJointVentureTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gau_InvestmentInJointVentureTable_1" xlink:to="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" xlink:to="loc_gau_AsankoGoldMineMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_InvestmentInJointVentureLineItems_0" xlink:to="loc_gau_GoldPriceWeightedAverageSensitivityDescription_6" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_InvestmentInJointVentureLineItems_0" xlink:to="loc_gau_GoldPriceWeightedAverageIncreaseSensitivityImpactOnRecoverableAmount_7" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_InvestmentInJointVentureLineItems_0" xlink:to="loc_gau_GoldPriceWeightedAverageDecreaseSensitivityImpactOnRecoverableAmount_8" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_InvestmentInJointVentureLineItems_0" xlink:to="loc_gau_DiscountRateSensitivityDescription_9" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_InvestmentInJointVentureLineItems_0" xlink:to="loc_gau_DiscountRateIncreaseSensitivityImpactOnRecoverableAmount_10" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_InvestmentInJointVentureLineItems_0" xlink:to="loc_gau_DiscountRateDecreaseSensitivityImpactOnRecoverableAmount_11" order="60" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_InvestmentInJointVentureLineItems_0" xlink:to="loc_gau_ValueOfMineralResourcesBeyondProvenAndProbableReservesWeightedAverageAssumptionSensitivity_12" order="70" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/InvestmentInJointVentureDisclosureOfDetailedInformationAboutSummaryOfFinanceExpensesIncurredByJVDetails">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AsankoGoldMineMember" xlink:label="loc_gau_AsankoGoldMineMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_PremiumsPaidForHedgingInstruments" xlink:label="loc_gau_PremiumsPaidForHedgingInstruments_6"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ProvisionForDecommissioningRestorationAndRehabilitationCostsAccretionExpense" xlink:label="loc_gau_ProvisionForDecommissioningRestorationAndRehabilitationCostsAccretionExpense_7"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_FeesAndExpensesAssociatedWithRevolvingCreditFacility" xlink:label="loc_gau_FeesAndExpensesAssociatedWithRevolvingCreditFacility_8"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InterestExpenseOnLeaseLiabilities" xlink:label="loc_ifrs-full_InterestExpenseOnLeaseLiabilities_9"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_WithholdingTaxes" xlink:label="loc_gau_WithholdingTaxes_10"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherFinanceCost" xlink:label="loc_ifrs-full_OtherFinanceCost_11"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinanceCosts" xlink:label="loc_ifrs-full_FinanceCosts_12"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1" xlink:to="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" xlink:to="loc_gau_AsankoGoldMineMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_gau_PremiumsPaidForHedgingInstruments_6" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_gau_ProvisionForDecommissioningRestorationAndRehabilitationCostsAccretionExpense_7" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_gau_FeesAndExpensesAssociatedWithRevolvingCreditFacility_8" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_InterestExpenseOnLeaseLiabilities_9" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_gau_WithholdingTaxes_10" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_OtherFinanceCost_11" order="60" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xlink:to="loc_ifrs-full_FinanceCosts_12" order="70" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/EquityReservesDisclosureOfNumberRSUsDetails">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReservesWithinEquityLineItems" xlink:label="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReservesWithinEquityTable" xlink:label="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EquityTransactionsAxis" xlink:label="loc_gau_EquityTransactionsAxis_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EquityTransactionsDomain" xlink:label="loc_gau_EquityTransactionsDomain_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RestrictedShareUnitsMember" xlink:label="loc_gau_RestrictedShareUnitsMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EquityTransactionsDomain" xlink:label="loc_gau_EquityTransactionsDomain_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement" xlink:label="loc_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_6"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted" xlink:label="loc_ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted_7"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_NumberOfOtherEquityInstrumentsDerecognizedOnClosingOfJointVentureTransaction" xlink:label="loc_gau_NumberOfOtherEquityInstrumentsDerecognizedOnClosingOfJointVentureTransaction_8"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_NumberOfOtherEquityInstrumentsSettledInCash" xlink:label="loc_gau_NumberOfOtherEquityInstrumentsSettledInCash_9"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement" xlink:label="loc_ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement_10"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement" xlink:label="loc_ifrs-full_NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement_11"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1" xlink:to="loc_gau_EquityTransactionsAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gau_EquityTransactionsAxis_1" xlink:to="loc_gau_EquityTransactionsDomain_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_EquityTransactionsDomain_1" xlink:to="loc_gau_RestrictedShareUnitsMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gau_EquityTransactionsAxis_1" xlink:to="loc_gau_EquityTransactionsDomain_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_6" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted_7" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_NumberOfOtherEquityInstrumentsDerecognizedOnClosingOfJointVentureTransaction_8" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_NumberOfOtherEquityInstrumentsSettledInCash_9" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement_10" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement_11" order="60" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/EquityReservesDisclosureOfMovementInRSULiabilityDetails">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReservesWithinEquityLineItems" xlink:label="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReservesWithinEquityTable" xlink:label="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EquityTransactionsAxis" xlink:label="loc_gau_EquityTransactionsAxis_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EquityTransactionsDomain" xlink:label="loc_gau_EquityTransactionsDomain_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RestrictedShareUnitsMember" xlink:label="loc_gau_RestrictedShareUnitsMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EquityTransactionsDomain" xlink:label="loc_gau_EquityTransactionsDomain_Default"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RestrictedStockUnitLiability" xlink:label="loc_gau_RestrictedStockUnitLiability_6"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RestrictedStockUnitAwardsVestedDuringYearNetOfCancelledExpiredAwards" xlink:label="loc_gau_RestrictedStockUnitAwardsVestedDuringYearNetOfCancelledExpiredAwards_7"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RestrictedStockUnitLiabilitySettledInCash" xlink:label="loc_gau_RestrictedStockUnitLiabilitySettledInCash_8"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RestrictedStockUnitLiabilityDerecognizedOnClosingJointVentureTransaction" xlink:label="loc_gau_RestrictedStockUnitLiabilityDerecognizedOnClosingJointVentureTransaction_9"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RestrictedStockUnitLiabilityCurrent" xlink:label="loc_gau_RestrictedStockUnitLiabilityCurrent_10"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RsuLiabilityNoncurrent" xlink:label="loc_gau_RsuLiabilityNoncurrent_11"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RestrictedStockUnitLiabilityNoncurrent" xlink:label="loc_gau_RestrictedStockUnitLiabilityNoncurrent_12"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1" xlink:to="loc_gau_EquityTransactionsAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gau_EquityTransactionsAxis_1" xlink:to="loc_gau_EquityTransactionsDomain_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_EquityTransactionsDomain_1" xlink:to="loc_gau_RestrictedShareUnitsMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gau_EquityTransactionsAxis_1" xlink:to="loc_gau_EquityTransactionsDomain_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_RestrictedStockUnitLiability_6" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_RestrictedStockUnitAwardsVestedDuringYearNetOfCancelledExpiredAwards_7" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_RestrictedStockUnitLiabilitySettledInCash_8" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_RestrictedStockUnitLiabilityDerecognizedOnClosingJointVentureTransaction_9" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_RestrictedStockUnitLiabilityCurrent_10" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_RsuLiabilityNoncurrent_11" order="60" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_RestrictedStockUnitLiabilityNoncurrent_12" order="70" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/ExplorationAndEvaluationAssetsDetailTextuals">
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsLineItems" xlink:label="loc_gau_StatementsLineItems_0"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StatementsTable" xlink:label="loc_gau_StatementsTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesAxis" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForSubsidiariesMember" xlink:label="loc_ifrs-full_EntitysTotalForSubsidiariesMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_GalianoGoldMaliExplorationSarlMember" xlink:label="loc_gau_GalianoGoldMaliExplorationSarlMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForSubsidiariesMember" xlink:label="loc_ifrs-full_EntitysTotalForSubsidiariesMember_Default"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_LicensesTermOfExplorationAndEvaluationProperties" xlink:label="loc_gau_LicensesTermOfExplorationAndEvaluationProperties_6"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_RecoverableAmountOfExplorationAndEvaluationExpenditures" xlink:label="loc_gau_RecoverableAmountOfExplorationAndEvaluationExpenditures_7"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ImpairmentLossRecognisedInProfitOrLoss" xlink:label="loc_ifrs-full_ImpairmentLossRecognisedInProfitOrLoss_8"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_StatementsTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gau_StatementsTable_1" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForSubsidiariesMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForSubsidiariesMember_1" xlink:to="loc_gau_GalianoGoldMaliExplorationSarlMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForSubsidiariesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_LicensesTermOfExplorationAndEvaluationProperties_6" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_gau_RecoverableAmountOfExplorationAndEvaluationExpenditures_7" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_StatementsLineItems_0" xlink:to="loc_ifrs-full_ImpairmentLossRecognisedInProfitOrLoss_8" order="30" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/InvestmentInJointVentureScheduleOfSensitivityAnalysisDetails">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfJointVenturesLineItems" xlink:label="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfJointVenturesTable" xlink:label="loc_ifrs-full_DisclosureOfJointVenturesTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AsankoGoldMineMember" xlink:label="loc_gau_AsankoGoldMineMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ActuarialAssumptionsAxis" xlink:label="loc_ifrs-full_ActuarialAssumptionsAxis_5"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ActuarialAssumptionsMember" xlink:label="loc_ifrs-full_ActuarialAssumptionsMember_5"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ActuarialAssumptionOfGoldPriceMember" xlink:label="loc_gau_ActuarialAssumptionOfGoldPriceMember_5"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ActuarialAssumptionOfDiscountRatesMember" xlink:label="loc_ifrs-full_ActuarialAssumptionOfDiscountRatesMember_6"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherMaterialActuarialAssumptionsMember" xlink:label="loc_ifrs-full_OtherMaterialActuarialAssumptionsMember_7"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ActuarialAssumptionsMember" xlink:label="loc_ifrs-full_ActuarialAssumptionsMember_Default"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_SensitivityAnalysisIncreaseInFairValueOfMineralResources" xlink:label="loc_gau_SensitivityAnalysisIncreaseInFairValueOfMineralResources_12"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_SensitivityAnalysisDecreaseInFairValueOfMineralResources" xlink:label="loc_gau_SensitivityAnalysisDecreaseInFairValueOfMineralResources_13"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfJointVenturesTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesTable_1" xlink:to="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" xlink:to="loc_gau_AsankoGoldMineMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesTable_1" xlink:to="loc_ifrs-full_ActuarialAssumptionsAxis_5" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ActuarialAssumptionsAxis_5" xlink:to="loc_ifrs-full_ActuarialAssumptionsMember_5" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ActuarialAssumptionsMember_5" xlink:to="loc_gau_ActuarialAssumptionOfGoldPriceMember_5" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ActuarialAssumptionsMember_5" xlink:to="loc_ifrs-full_ActuarialAssumptionOfDiscountRatesMember_6" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ActuarialAssumptionsMember_5" xlink:to="loc_ifrs-full_OtherMaterialActuarialAssumptionsMember_7" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ActuarialAssumptionsAxis_5" xlink:to="loc_ifrs-full_ActuarialAssumptionsMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_SensitivityAnalysisIncreaseInFairValueOfMineralResources_12" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfJointVenturesLineItems_0" xlink:to="loc_gau_SensitivityAnalysisDecreaseInFairValueOfMineralResources_13" order="20" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/EquityReservesAndLongtermIncentivePlanAwardsDisclosureOfReconciliationOfTheMovementInPSUsDetails">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReservesWithinEquityLineItems" xlink:label="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReservesWithinEquityTable" xlink:label="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EquityTransactionsAxis" xlink:label="loc_gau_EquityTransactionsAxis_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EquityTransactionsDomain" xlink:label="loc_gau_EquityTransactionsDomain_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_PerformanceShareUnitsMember" xlink:label="loc_gau_PerformanceShareUnitsMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EquityTransactionsDomain" xlink:label="loc_gau_EquityTransactionsDomain_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement" xlink:label="loc_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_6"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted" xlink:label="loc_ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted_7"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement" xlink:label="loc_ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement_8"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement" xlink:label="loc_ifrs-full_NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement_9"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1" xlink:to="loc_gau_EquityTransactionsAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gau_EquityTransactionsAxis_1" xlink:to="loc_gau_EquityTransactionsDomain_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_EquityTransactionsDomain_1" xlink:to="loc_gau_PerformanceShareUnitsMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gau_EquityTransactionsAxis_1" xlink:to="loc_gau_EquityTransactionsDomain_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_6" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted_7" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement_8" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement_9" order="40" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/EquityReservesAndLongtermIncentivePlanAwardsDisclosureOfReconciliationOfTheMovementInDSUsDetails">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReservesWithinEquityLineItems" xlink:label="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReservesWithinEquityTable" xlink:label="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EquityTransactionsAxis" xlink:label="loc_gau_EquityTransactionsAxis_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EquityTransactionsDomain" xlink:label="loc_gau_EquityTransactionsDomain_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DeferredShareUnitsMember" xlink:label="loc_gau_DeferredShareUnitsMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EquityTransactionsDomain" xlink:label="loc_gau_EquityTransactionsDomain_Default"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement" xlink:label="loc_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_6"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted" xlink:label="loc_ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted_7"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement" xlink:label="loc_ifrs-full_NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement_8"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1" xlink:to="loc_gau_EquityTransactionsAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gau_EquityTransactionsAxis_1" xlink:to="loc_gau_EquityTransactionsDomain_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_EquityTransactionsDomain_1" xlink:to="loc_gau_DeferredShareUnitsMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gau_EquityTransactionsAxis_1" xlink:to="loc_gau_EquityTransactionsDomain_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_6" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted_7" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement_8" order="30" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/EquityReservesAndLongtermIncentivePlanAwardsDisclosureOfMovementInPSUsLiabilityDetails">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReservesWithinEquityLineItems" xlink:label="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReservesWithinEquityTable" xlink:label="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EquityTransactionsAxis" xlink:label="loc_gau_EquityTransactionsAxis_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EquityTransactionsDomain" xlink:label="loc_gau_EquityTransactionsDomain_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_PerformanceShareUnitsMember" xlink:label="loc_gau_PerformanceShareUnitsMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EquityTransactionsDomain" xlink:label="loc_gau_EquityTransactionsDomain_Default"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ShareUnitsLiability" xlink:label="loc_gau_ShareUnitsLiability_6"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ShareUnitsAwardsVestedDuringYearNetOfCancelledExpiredAwards" xlink:label="loc_gau_ShareUnitsAwardsVestedDuringYearNetOfCancelledExpiredAwards_7"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ShareUnitsLiabilitySettledInCash" xlink:label="loc_gau_ShareUnitsLiabilitySettledInCash_8"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StockUnitLiabilityCurrent" xlink:label="loc_gau_StockUnitLiabilityCurrent_9"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StockUnitLiabilityNoncurrent" xlink:label="loc_gau_StockUnitLiabilityNoncurrent_10"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1" xlink:to="loc_gau_EquityTransactionsAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gau_EquityTransactionsAxis_1" xlink:to="loc_gau_EquityTransactionsDomain_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_EquityTransactionsDomain_1" xlink:to="loc_gau_PerformanceShareUnitsMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gau_EquityTransactionsAxis_1" xlink:to="loc_gau_EquityTransactionsDomain_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_ShareUnitsLiability_6" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_ShareUnitsAwardsVestedDuringYearNetOfCancelledExpiredAwards_7" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_ShareUnitsLiabilitySettledInCash_8" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_StockUnitLiabilityCurrent_9" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_StockUnitLiabilityNoncurrent_10" order="50" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/EquityReservesAndLongtermIncentivePlanAwardsDisclosureOfMovementInDSUsLiabilityDetails">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReservesWithinEquityLineItems" xlink:label="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReservesWithinEquityTable" xlink:label="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EquityTransactionsAxis" xlink:label="loc_gau_EquityTransactionsAxis_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EquityTransactionsDomain" xlink:label="loc_gau_EquityTransactionsDomain_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_DeferredShareUnitsMember" xlink:label="loc_gau_DeferredShareUnitsMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EquityTransactionsDomain" xlink:label="loc_gau_EquityTransactionsDomain_Default"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ShareUnitsLiability" xlink:label="loc_gau_ShareUnitsLiability_6"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ShareUnitsAwardsVestedDuringYearNetOfCancelledExpiredAwards" xlink:label="loc_gau_ShareUnitsAwardsVestedDuringYearNetOfCancelledExpiredAwards_7"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1" xlink:to="loc_gau_EquityTransactionsAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gau_EquityTransactionsAxis_1" xlink:to="loc_gau_EquityTransactionsDomain_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_EquityTransactionsDomain_1" xlink:to="loc_gau_DeferredShareUnitsMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gau_EquityTransactionsAxis_1" xlink:to="loc_gau_EquityTransactionsDomain_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_ShareUnitsLiability_6" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_ShareUnitsAwardsVestedDuringYearNetOfCancelledExpiredAwards_7" order="20" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/EquityReservesAndLongtermIncentivePlanAwardsDisclosureOfMovementInPhantomShareUnitLiabilityDetails">
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReservesWithinEquityLineItems" xlink:label="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReservesWithinEquityTable" xlink:label="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EquityTransactionsAxis" xlink:label="loc_gau_EquityTransactionsAxis_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EquityTransactionsDomain" xlink:label="loc_gau_EquityTransactionsDomain_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_PhantomShareUnitsMember" xlink:label="loc_gau_PhantomShareUnitsMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_EquityTransactionsDomain" xlink:label="loc_gau_EquityTransactionsDomain_Default"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ShareUnitsLiability" xlink:label="loc_gau_ShareUnitsLiability_6"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ShareUnitsAwardsVestedDuringYearNetOfCancelledExpiredAwards" xlink:label="loc_gau_ShareUnitsAwardsVestedDuringYearNetOfCancelledExpiredAwards_7"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StockUnitLiabilityCurrent" xlink:label="loc_gau_StockUnitLiabilityCurrent_8"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_StockUnitLiabilityNoncurrent" xlink:label="loc_gau_StockUnitLiabilityNoncurrent_9"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_1" xlink:to="loc_gau_EquityTransactionsAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gau_EquityTransactionsAxis_1" xlink:to="loc_gau_EquityTransactionsDomain_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_EquityTransactionsDomain_1" xlink:to="loc_gau_PhantomShareUnitsMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gau_EquityTransactionsAxis_1" xlink:to="loc_gau_EquityTransactionsDomain_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_ShareUnitsLiability_6" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_ShareUnitsAwardsVestedDuringYearNetOfCancelledExpiredAwards_7" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_StockUnitLiabilityCurrent_8" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_0" xlink:to="loc_gau_StockUnitLiabilityNoncurrent_9" order="40" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/InvestmentInJointVentureDisclosureOfGoldPriceAssumptionsDetails">
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_InvestmentInJointVentureLineItems" xlink:label="loc_gau_InvestmentInJointVentureLineItems_0"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_InvestmentInJointVentureTable" xlink:label="loc_gau_InvestmentInJointVentureTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AsankoGoldMineMember" xlink:label="loc_gau_AsankoGoldMineMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_GoldPricePerOunceAssumptionForNextYear" xlink:label="loc_gau_GoldPricePerOunceAssumptionForNextYear_6"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_GoldPricePerOunceAssumptionForSecondYear" xlink:label="loc_gau_GoldPricePerOunceAssumptionForSecondYear_7"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_GoldPricePerOunceAssumptionForThreeToFiveYear" xlink:label="loc_gau_GoldPricePerOunceAssumptionForThreeToFiveYear_8"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_GoldPricePerOunceAssumptionForLongTerm" xlink:label="loc_gau_GoldPricePerOunceAssumptionForLongTerm_9"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_GoldPricePerOunceWeightedAverage" xlink:label="loc_gau_GoldPricePerOunceWeightedAverage_10"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_gau_InvestmentInJointVentureLineItems_0" xlink:to="loc_gau_InvestmentInJointVentureTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gau_InvestmentInJointVentureTable_1" xlink:to="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" xlink:to="loc_gau_AsankoGoldMineMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_InvestmentInJointVentureLineItems_0" xlink:to="loc_gau_GoldPricePerOunceAssumptionForNextYear_6" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_InvestmentInJointVentureLineItems_0" xlink:to="loc_gau_GoldPricePerOunceAssumptionForSecondYear_7" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_InvestmentInJointVentureLineItems_0" xlink:to="loc_gau_GoldPricePerOunceAssumptionForThreeToFiveYear_8" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_InvestmentInJointVentureLineItems_0" xlink:to="loc_gau_GoldPricePerOunceAssumptionForLongTerm_9" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_InvestmentInJointVentureLineItems_0" xlink:to="loc_gau_GoldPricePerOunceWeightedAverage_10" order="50" use="optional"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.asanko.com/role/InvestmentInJointVentureDisclosureOfEstimatedRecoverableAmountOfAGMCGUAndItsCarryingValueDetails">
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_InvestmentInJointVentureLineItems" xlink:label="loc_gau_InvestmentInJointVentureLineItems_0"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_InvestmentInJointVentureTable" xlink:label="loc_gau_InvestmentInJointVentureTable_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_AsankoGoldMineMember" xlink:label="loc_gau_AsankoGoldMineMember_1"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForRelatedPartiesMember" xlink:label="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_NetPresentValueOfEstimatedLifeOfMineCashFlows" xlink:label="loc_gau_NetPresentValueOfEstimatedLifeOfMineCashFlows_6"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_ValueBeyondProvenAndProbableReserves" xlink:label="loc_gau_ValueBeyondProvenAndProbableReserves_7"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_CostToSell" xlink:label="loc_gau_CostToSell_8"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RecoverableAmountOfAssetOrCashgeneratingUnit" xlink:label="loc_ifrs-full_RecoverableAmountOfAssetOrCashgeneratingUnit_9"/>
    <loc xlink:type="locator" xlink:href="gau-20221231.xsd#gau_CarryingValueOfCashGeneratingUnit" xlink:label="loc_gau_CarryingValueOfCashGeneratingUnit_10"/>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ReversalOfImpairmentLoss" xlink:label="loc_ifrs-full_ReversalOfImpairmentLoss_11"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_gau_InvestmentInJointVentureLineItems_0" xlink:to="loc_gau_InvestmentInJointVentureTable_1" order="0" use="optional" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_gau_InvestmentInJointVentureTable_1" xlink:to="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_1" xlink:to="loc_gau_AsankoGoldMineMember_1" order="0" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis_1" xlink:to="loc_ifrs-full_EntitysTotalForRelatedPartiesMember_Default" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_InvestmentInJointVentureLineItems_0" xlink:to="loc_gau_NetPresentValueOfEstimatedLifeOfMineCashFlows_6" order="10" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_InvestmentInJointVentureLineItems_0" xlink:to="loc_gau_ValueBeyondProvenAndProbableReserves_7" order="20" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_InvestmentInJointVentureLineItems_0" xlink:to="loc_gau_CostToSell_8" order="30" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_InvestmentInJointVentureLineItems_0" xlink:to="loc_ifrs-full_RecoverableAmountOfAssetOrCashgeneratingUnit_9" order="40" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_InvestmentInJointVentureLineItems_0" xlink:to="loc_gau_CarryingValueOfCashGeneratingUnit_10" order="50" use="optional"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gau_InvestmentInJointVentureLineItems_0" xlink:to="loc_ifrs-full_ReversalOfImpairmentLoss_11" order="60" use="optional"/>
  </definitionLink>
</linkbase>