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

    <schemaVersion>X0708</schemaVersion>

    <submissionType>D/A</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0002006774</cik>
        <entityName>Canvasback Mining Co LLC</entityName>
        <issuerAddress>
            <street1>295 SEVEN FARMS DRIVE</street1>
            <street2>SUITE C BOX 214</street2>
            <city>CHARLESTON</city>
            <stateOrCountry>SC</stateOrCountry>
            <stateOrCountryDescription>SOUTH CAROLINA</stateOrCountryDescription>
            <zipCode>29492</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>9177106837</issuerPhoneNumber>
        <jurisdictionOfInc>SOUTH CAROLINA</jurisdictionOfInc>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <value>None</value>
        </edgarPreviousNameList>
        <entityType>Limited Liability Company</entityType>
        <yearOfInc>
            <withinFiveYears>true</withinFiveYears>
            <value>2023</value>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>ANATOLI</firstName>
                <lastName>SEMENOFF</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>295 SEVEN FARMS DRIVE</street1>
                <street2>SUITE C214</street2>
                <city>CHARLESTON</city>
                <stateOrCountry>SC</stateOrCountry>
                <stateOrCountryDescription>SOUTH CAROLINA</stateOrCountryDescription>
                <zipCode>29492</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Anatoli is a managing member of DynoMine, LLC, which is the Manager of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>STANLEY</firstName>
                <lastName>WILHELM</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>295 SEVEN FARMS DRIVE</street1>
                <street2>SUITE C214</street2>
                <city>CHARLESTON</city>
                <stateOrCountry>SC</stateOrCountry>
                <stateOrCountryDescription>SOUTH CAROLINA</stateOrCountryDescription>
                <zipCode>29492</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Stanley is a managing member of DynoMine, LLC, which is the Manager of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Investing</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>$5,000,001 - $25,000,000</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06b</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>true</isAmendment>
                <previousAccessionNumber>0002006774-24-000001</previousAccessionNumber>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2023-12-28</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>5900000</totalOfferingAmount>
            <totalAmountSold>5839857</totalAmountSold>
            <totalRemaining>60143</totalRemaining>
            <clarificationOfResponse>Some units were sold at a discount.</clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>0</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>1749434</dollarAmount>
            </grossProceedsUsed>
            <clarificationOfResponse>Fees were paid to the managing member of the Issuer, DynoMine, LLC, which in turn is managed by Anatoli Semenoff and Stanley Wilhelm.</clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>Canvasback Mining Co LLC</issuerName>
                <signatureName>Chandler Harper, Esq.</signatureName>
                <nameOfSigner>Chandler Harper, Esq.</nameOfSigner>
                <signatureTitle>By POA from Stanley Wilhelm, Manager</signatureTitle>
                <signatureDate>2024-01-19</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
