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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0001140361-08-005861.txt : 20080304
<SEC-HEADER>0001140361-08-005861.hdr.sgml : 20080304
<ACCEPTANCE-DATETIME>20080304210525
ACCESSION NUMBER:		0001140361-08-005861
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080229
FILED AS OF DATE:		20080304
DATE AS OF CHANGE:		20080304

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			VIRTUSA CORP
		CENTRAL INDEX KEY:			0001207074
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER PROGRAMMING SERVICES [7371]
		IRS NUMBER:				000000000

	BUSINESS ADDRESS:	
		STREET 1:		2000 WEST PARK DRIVE
		CITY:			WESTBOROUGH
		STATE:			MA
		ZIP:			01581
		BUSINESS PHONE:		508-389-7202

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Armony Izhar
		CENTRAL INDEX KEY:			0001395240

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33625
		FILM NUMBER:		08665913

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		781-768-6000

	MAIL ADDRESS:	
		STREET 1:		1000 WINTER STREET
		STREET 2:		SUITE 3300
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02451
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-02-29</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001207074</issuerCik>
        <issuerName>VIRTUSA CORP</issuerName>
        <issuerTradingSymbol>VRTU</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001395240</rptOwnerCik>
            <rptOwnerName>Armony Izhar</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CHARLES RIVER XI GP, LLC</rptOwnerStreet1>
            <rptOwnerStreet2>1000 WINTER STREET, SUITE 3300</rptOwnerStreet2>
            <rptOwnerCity>WALTHAM</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02451</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-02-29</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>400000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>11.13</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2577611</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Represents 388,134 shares sold by Charles River Partnership XI, LP (&quot;CRP XI&quot;), 9,804 shares sold by Charles River Friends XI-A, LP (&quot;CRF XI-A&quot;) and 2,062 shares sold by Charles River Friends XI-B, LP (&quot;CRF XI-B&quot;).</footnote>
        <footnote id="F2">Represents 2,501,153 shares held by CRP XI, 63,173 shares held by CRF XI-A and 13,285 shares held by CRF XI-B.</footnote>
        <footnote id="F3">Charles River XI GP, LLC (&quot;CR XI GP LLC&quot;) is the General Partner of Charles River XI GP, LP (&quot;CR XI GP LP&quot;).  CR XI GP LLC is also the General Partner of CRF XI-A and CRF XI-B.  CR XI GP LP is the General Partner of CRP XI.  CRP XI, CRF XI-A and CRF XI-B (collectively, the &quot;Partnerships&quot;) form a &quot;group&quot; for purposes of Section 13(d) of the Securities Exchange Act of 1934.  Each of Izhar Armony, Christopher Baldwin, Richard M. Burnes, Jr., Ted R. Dintersmith, Bruce I. Sachs, William P. Tai, and Michael J. Zak is a managing member of CR XI GP, LLC.</footnote>
        <footnote id="F4">Accordingly, each of CR XI GP LP, CR XI GP LLC and Messrs. Armony, Baldwin, Burnes, Dintersmith, Sachs, Tai, and Zak (collectively, the &quot;Management Persons&quot;) may be deemed to beneficially own the securities owned by the Partnerships.  Izhar Armony disclaims beneficial ownership of the securities reported herein held by the Partnerships, except to the extent of his pecuniary interest in each applicable Partnership, if any.  The filing of this statement by Izhar Armony shall not be deemed an admission that he is, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the beneficial owner of any equity securities covered by this statement.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ John A. Genest, Attorney-in-Fact for Izhar Armony</signatureName>
        <signatureDate>2008-03-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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