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

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2002-03-21</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001157543</issuerCik>
        <issuerName>ADVANTAGE ADVISERS MULTI - SECTOR FUND I</issuerName>
        <issuerTradingSymbol>XAMSX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001354930</rptOwnerCik>
            <rptOwnerName>Advantage Advisers, Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>200 PARK AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>24TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10166</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Managing member of the adviser</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Shares</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5936.842</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See note 2</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <remarks>1. The Reporting Person is a managing member of the Fund's investment adviser.

2. The Fund shares are held directly by the investment adviser and indirectly by the Reporting Person by virtue of its interest in the investment adviser.  The Reporting Person disclaims beneficial ownership of any Fund shares except as to those shares in which it may be deemed to have indirect pecuniary interest pursuant to Rule 16a-1(a)(2).</remarks>

    <ownerSignature>
        <signatureName>/s/ Stephen Beach</signatureName>
        <signatureDate>2006-02-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
