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

    <schemaVersion>X0203</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2009-11-24</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001392091</issuerCik>
        <issuerName>Blueknight Energy Partners, L.P.</issuerName>
        <issuerTradingSymbol>SGLP</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001377591</rptOwnerCik>
            <rptOwnerName>Ahmed Javed</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1100 LOUISIANA STREET</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 5500</rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77002</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes></footnotes>

    <remarks>Mr. Ahmed is a director of Blueknight Energy Partners G.P., L.L.C., the general partner of Blueknight Energy Partners, L.P.</remarks>

    <ownerSignature>
        <signatureName>/s/ Javed Ahmed</signatureName>
        <signatureDate>2009-12-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
