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

    <schemaVersion>X0708</schemaVersion>

    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001593783</cik>
        <entityName>MIDNIGHT SUN MINING CORP.</entityName>
        <issuerAddress>
            <street1>789 West Pender Street</street1>
            <street2>Suite 1205</street2>
            <city>VANCOUVER</city>
            <stateOrCountry>A1</stateOrCountry>
            <stateOrCountryDescription>BRITISH COLUMBIA, CANADA</stateOrCountryDescription>
            <zipCode>V6C 1H2</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>6043518850</issuerPhoneNumber>
        <jurisdictionOfInc>BRITISH COLUMBIA, CANADA</jurisdictionOfInc>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <value>None</value>
        </edgarPreviousNameList>
        <entityType>Corporation</entityType>
        <yearOfInc>
            <overFiveYears>true</overFiveYears>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Allan</firstName>
                <lastName>Fabbro</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>789 West Pender Street</street1>
                <street2>Suite 1205</street2>
                <city>VANCOUVER</city>
                <stateOrCountry>A1</stateOrCountry>
                <stateOrCountryDescription>BRITISH COLUMBIA, CANADA</stateOrCountryDescription>
                <zipCode>V6C 1H2</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>President, Chief Executive Officer and Director.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Alastair</firstName>
                <lastName>Brownlow</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>789 West Pender Street</street1>
                <street2>Suite 1205</street2>
                <city>VANCOUVER</city>
                <stateOrCountry>A1</stateOrCountry>
                <stateOrCountryDescription>BRITISH COLUMBIA, CANADA</stateOrCountryDescription>
                <zipCode>V6C 1H2</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Chief Financial Officer</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Matthew</firstName>
                <lastName>MacKenzie</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>789 West Pender Street</street1>
                <street2>Suite 1205</street2>
                <city>VANCOUVER</city>
                <stateOrCountry>A1</stateOrCountry>
                <stateOrCountryDescription>BRITISH COLUMBIA, CANADA</stateOrCountryDescription>
                <zipCode>V6C 1H2</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Corporate Secretary and Executive Vice President.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Adrian</firstName>
                <lastName>Karolko</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>789 West Pender Street</street1>
                <street2>Suite 1205</street2>
                <city>VANCOUVER</city>
                <stateOrCountry>A1</stateOrCountry>
                <stateOrCountryDescription>BRITISH COLUMBIA, CANADA</stateOrCountryDescription>
                <zipCode>V6C 1H2</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>VP Exploration.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Richard</firstName>
                <lastName>Mazur</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>789 West Pender Street</street1>
                <street2>Suite 1205</street2>
                <city>VANCOUVER</city>
                <stateOrCountry>A1</stateOrCountry>
                <stateOrCountryDescription>BRITISH COLUMBIA, CANADA</stateOrCountryDescription>
                <zipCode>V6C 1H2</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Wayne</firstName>
                <lastName>Moorhouse</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>789 West Pender Street</street1>
                <street2>Suite 1205</street2>
                <city>VANCOUVER</city>
                <stateOrCountry>A1</stateOrCountry>
                <stateOrCountryDescription>BRITISH COLUMBIA, CANADA</stateOrCountryDescription>
                <zipCode>V6C 1H2</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Brett</firstName>
                <lastName>Richards</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>789 West Pender Street</street1>
                <street2>Suite 1205</street2>
                <city>VANCOUVER</city>
                <stateOrCountry>A1</stateOrCountry>
                <stateOrCountryDescription>BRITISH COLUMBIA, CANADA</stateOrCountryDescription>
                <zipCode>V6C 1H2</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Robert</firstName>
                <lastName>Sibthorpe</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>789 West Pender Street</street1>
                <street2>Suite 1205</street2>
                <city>VANCOUVER</city>
                <stateOrCountry>A1</stateOrCountry>
                <stateOrCountryDescription>BRITISH COLUMBIA, CANADA</stateOrCountryDescription>
                <zipCode>V6C 1H2</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Kevin</firstName>
                <lastName>Bonel</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>789 West Pender Street</street1>
                <street2>Suite 1205</street2>
                <city>VANCOUVER</city>
                <stateOrCountry>A1</stateOrCountry>
                <stateOrCountryDescription>BRITISH COLUMBIA, CANADA</stateOrCountryDescription>
                <zipCode>V6C 1H2</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>false</isAmendment>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2025-10-28</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>true</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
            <isOptionToAcquireType>true</isOptionToAcquireType>
            <isSecurityToBeAcquiredType>true</isSecurityToBeAcquiredType>
            <isOtherType>true</isOtherType>
            <descriptionOfOtherType>Units, comprised of common shares and warrants.</descriptionOfOtherType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>2678451</totalOfferingAmount>
            <totalAmountSold>1538685</totalAmountSold>
            <totalRemaining>1139766</totalRemaining>
            <clarificationOfResponse>Total Offering Amount equals price of units, consisting of shares (1,591,000 x C$1.35) plus aggregate exercise price of warrants (795,500 x C$2.00) converted to US dollars. There is no guarantee the warrants, expiring October 28, 2028 will be exercised.</clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>2</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>2025-11-12</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>