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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2014-12-11</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0001319009</issuerCik>
        <issuerName>Midway Gold Corp</issuerName>
        <issuerTradingSymbol>MDW</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001492462</rptOwnerCik>
            <rptOwnerName>Brunk Kenneth Arnold</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O MIDWAY GOLD CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>8310 SOUTH VALLEY HIGHWAY, SUITE 280</rptOwnerStreet2>
            <rptOwnerCity>ENGLEWOOD</rptOwnerCity>
            <rptOwnerState>CO</rptOwnerState>
            <rptOwnerZipCode>80112</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <officerTitle></officerTitle>
            <otherText>Former Pres., CEO &amp; Director</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes></footnotes>

    <remarks>Effective December 10, 2014 and December 11, 2014, respectively, the reporting person retired his position as the Issuer's President and Chief Executive Officer and the reporting person also retired his position as a member of the Issuer's board of directors.  The reporting person retired as the Issuer's President and Chief Executive Officer on December 10, 2014 and the reporting person's last official day as a member of the Issuer's board of directors was December 11, 2014.</remarks>

    <ownerSignature>
        <signatureName>/s/ Kenneth Arnold Brunk</signatureName>
        <signatureDate>2014-12-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
