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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 Sx1YANA5WDxbTqj50OtPRQniPnS6mzXtunxTYhH5Fmikw8cqPQvuUsvPdRw/Csqr
 bgw0sPJHfzvRtKXgLKSe3Q==

<SEC-DOCUMENT>0001179110-09-000662.txt : 20090106
<SEC-HEADER>0001179110-09-000662.hdr.sgml : 20090106
<ACCEPTANCE-DATETIME>20090106175117
ACCESSION NUMBER:		0001179110-09-000662
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080820
FILED AS OF DATE:		20090106
DATE AS OF CHANGE:		20090106

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BLATT GREGORY R
		CENTRAL INDEX KEY:			0001206793

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34062
		FILM NUMBER:		09511262

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		2123147300

	MAIL ADDRESS:	
		STREET 1:		C/O INTERACTIVE CORP
		STREET 2:		152 W. 57TH ST.
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019

	FORMER NAME:	
		FORMER CONFORMED NAME:	BLATT GREG
		DATE OF NAME CHANGE:	20021121

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Interval Leisure Group, Inc.
		CENTRAL INDEX KEY:			0001434620
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-MEMBERSHIP ORGANIZATIONS [8600]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		6262 SUNSET DRIVE
		CITY:			MIAMI
		STATE:			FL
		ZIP:			33143
		BUSINESS PHONE:		(305) 666-1861

	MAIL ADDRESS:	
		STREET 1:		6262 SUNSET DRIVE
		CITY:			MIAMI
		STATE:			FL
		ZIP:			33143
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 4/A -
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2008-08-20</periodOfReport>

    <dateOfOriginalSubmission>2008-08-22</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001434620</issuerCik>
        <issuerName>Interval Leisure Group, Inc.</issuerName>
        <issuerTradingSymbol>IILG</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001206793</rptOwnerCik>
            <rptOwnerName>BLATT GREGORY R</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>6262 SUNSET DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MIAMI</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33143</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-08-20</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>54018</value>
                    <footnoteId id="F2"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>54018</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Reflects the acquisition of common stock, par value $0.01, of Interval Leisure Group, Inc. (&quot;ILG&quot;) in connection with the spin-off of ILG by IAC/InterActiveCorp (&quot;IAC&quot;), which was completed following the close of the market on August 20, 2008. The distribution of ILG common stock was effected by way of a dividend, pursuant to which holders of IAC common stock on August 11, 2008 received 1/5 shares of ILG common stock for each share of IAC common stock then held. Includes 23,416 shares that vested as a result of the acceleration of IAC restricted stock units, receipt of which is deferred until January 2, 2009.</footnote>
        <footnote id="F2">This amendment is being filed to correct the number of shares of common stock.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Michele L. Keusch, attorney-in-fact</signatureName>
        <signatureDate>2009-01-06</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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