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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 LLLt/ER425ZF1EDU3lFVk+ARyIb2izT1yz7L7S7qM1trKMHyglgW/qMlA0uqrN0F
 lDUPNvuvrSOEBY8LiFH3Fw==

<SEC-DOCUMENT>0001179110-10-004476.txt : 20100304
<SEC-HEADER>0001179110-10-004476.hdr.sgml : 20100304
<ACCEPTANCE-DATETIME>20100304160758
ACCESSION NUMBER:		0001179110-10-004476
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20100302
FILED AS OF DATE:		20100304
DATE AS OF CHANGE:		20100304

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			NASH CRAIG M
		CENTRAL INDEX KEY:			0001441010

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34062
		FILM NUMBER:		10657381

	MAIL ADDRESS:	
		STREET 1:		C/O INTERVAL LEISURE GROUP, INC.
		STREET 2:		6262 SUNSET DRIVE
		CITY:			MIAMI
		STATE:			FL
		ZIP:			33143

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
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 4 -
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-03-02</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001441010</rptOwnerCik>
            <rptOwnerName>NASH CRAIG M</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>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chairman, CEO and Pres.</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2010-03-02</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>82659</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2011-03-02</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>82659</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>82659</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Represents restricted stock units acquired pursuant to the Company's 2008 Stock and Annual Incentive Plan, which vest in equal installments over four years, subject to the satisfaction of certain performance conditions.</footnote>
        <footnote id="F2">Vested shares to be delivered shortly after vesting.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Craig M. Nash</signatureName>
        <signatureDate>2010-03-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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