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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2013-12-09</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0001425808</issuerCik>
        <issuerName>DUMA ENERGY CORP</issuerName>
        <issuerTradingSymbol>DUMA</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001416989</rptOwnerCik>
            <rptOwnerName>Driver Jeremy</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>800 GESSNER, SUITE 200</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77024</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes></footnotes>

    <remarks>Effective November 15, 2013, Mr. Driver resigned as an officer of Duma Energy Corp.  Effective November 25, 2013, Mr. Driver resigned from the board of directors of Duma Energy Corp.  By virtue of his wife's ownership in KD Navigation, Inc. and KW Navigation, Inc., he holds an indirect beneficial ownership in greater than 10% of Duma's common stock.  As he is no longer an officer or director of Duma, his wife, Kara Driver, will report these holdings instead of Mr. Driver.</remarks>

    <ownerSignature>
        <signatureName>Jeremy Driver</signatureName>
        <signatureDate>2013-12-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
