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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2013-01-29</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0001492872</issuerCik>
        <issuerName>Man Long Short Fund</issuerName>
        <issuerTradingSymbol>N/A</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001070596</rptOwnerCik>
            <rptOwnerName>BARTON GREGORY E</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O THESTREET.COM</rptOwnerStreet1>
            <rptOwnerStreet2>14 WALL STREET</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10005</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <remarks>The Man Long Short Fund is in the process of liquidation and deregistration as a Regsitered Investment Company with the Securities and Exchange Commission.  The Fund has filed an amendment to its Form N-8F on January 4, 2013 and is currently awaiting the SEC's deregistration notice.</remarks>

    <ownerSignature>
        <signatureName>Gregory E. Barton* By Danio Mastropieri as attorney-in-fact</signatureName>
        <signatureDate>2013-01-30</signatureDate>
    </ownerSignature>
</ownershipDocument>
