<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0707</schemaVersion>

    <submissionType>D/A</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001593783</cik>
        <entityName>MIDNIGHT SUN MINING CORP.</entityName>
        <issuerAddress>
            <street1>202-750 WEST PENDER STREET</street1>
            <city>VANCOUVER</city>
            <stateOrCountry>A1</stateOrCountry>
            <stateOrCountryDescription>BRITISH COLUMBIA, CANADA</stateOrCountryDescription>
            <zipCode>V6C 2T7</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>604-351-8850</issuerPhoneNumber>
        <jurisdictionOfInc>BRITISH COLUMBIA, CANADA</jurisdictionOfInc>
        <issuerPreviousNameList>
            <previousName>Midnight Sun Capital Corp.</previousName>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <value>None</value>
        </edgarPreviousNameList>
        <entityType>Corporation</entityType>
        <yearOfInc>
            <overFiveYears>true</overFiveYears>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>ALLAN</firstName>
                <middleName>JOHN</middleName>
                <lastName>FABBRO</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>202-750 WEST PENDER STREET</street1>
                <city>VANCOUVER</city>
                <stateOrCountry>A1</stateOrCountry>
                <stateOrCountryDescription>BRITISH COLUMBIA, CANADA</stateOrCountryDescription>
                <zipCode>V6C 2T7</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>RICK</firstName>
                <lastName>MAZUR</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>202-750 WEST PENDER STREET</street1>
                <city>VANCOUVER</city>
                <stateOrCountry>A1</stateOrCountry>
                <stateOrCountryDescription>BRITISH COLUMBIA, CANADA</stateOrCountryDescription>
                <zipCode>V6C 2T7</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>ROBERT</firstName>
                <middleName>A</middleName>
                <lastName>SIBTHORPE</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>202-750 WEST PENDER STREET</street1>
                <city>VANCOUVER</city>
                <stateOrCountry>A1</stateOrCountry>
                <stateOrCountryDescription>BRITISH COLUMBIA, CANADA</stateOrCountryDescription>
                <zipCode>V6C 2T7</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>TOM</firstName>
                <lastName>YE</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>202-750 WEST PENDER STREET</street1>
                <city>VANCOUVER</city>
                <stateOrCountry>A1</stateOrCountry>
                <stateOrCountryDescription>BRITISH COLUMBIA, CANADA</stateOrCountryDescription>
                <zipCode>V6C 2T7</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>WAYNE</firstName>
                <lastName>MOORHOUSE</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>202-750 WEST PENDER STREET</street1>
                <city>VANCOUVER</city>
                <stateOrCountry>A1</stateOrCountry>
                <stateOrCountryDescription>BRITISH COLUMBIA, CANADA</stateOrCountryDescription>
                <zipCode>V6C 2T7</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>MATTHEW</firstName>
                <lastName>MACKENZIE</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>202-750 WEST PENDER STREET</street1>
                <city>VANCOUVER</city>
                <stateOrCountry>A1</stateOrCountry>
                <stateOrCountryDescription>BRITISH COLUMBIA, CANADA</stateOrCountryDescription>
                <zipCode>V6C 2T7</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Other</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>Decline to Disclose</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06b</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>true</isAmendment>
                <previousAccessionNumber>0001183740-13-000455</previousAccessionNumber>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2013-11-06</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
            <isOptionToAcquireType>true</isOptionToAcquireType>
            <isSecurityToBeAcquiredType>true</isSecurityToBeAcquiredType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>185430</totalOfferingAmount>
            <totalAmountSold>64497</totalAmountSold>
            <totalRemaining>120933</totalRemaining>
            <clarificationOfResponse>13(a) represents the price of the units (420,000 units @ C$0.16), plus the aggregate exercise price of the warrants underlying the units (420,000 warrants @ C$0.30), converted to US$.  There is no guarantee the warrants will be exercised.</clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>5</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
            <clarificationOfResponse></clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>MIDNIGHT SUN MINING CORP.</issuerName>
                <signatureName>/s/ Matthew MacKenzie</signatureName>
                <nameOfSigner>MATTHEW MACKENZIE</nameOfSigner>
                <signatureTitle>CORPORATE SECRETARY</signatureTitle>
                <signatureDate>2014-11-05</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>