-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 EaLiKAAEnlbtXGVy0B+yfBs6+ySsp5T9HM+ikhpeC/xL+PoMO8g/XPr+tUg0LXQc
 Kk/ELX9+x7iWCyaVT5DxnA==

<SEC-DOCUMENT>0001140361-08-011809.txt : 20080509
<SEC-HEADER>0001140361-08-011809.hdr.sgml : 20080509
<ACCEPTANCE-DATETIME>20080509172402
ACCESSION NUMBER:		0001140361-08-011809
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080507
FILED AS OF DATE:		20080509
DATE AS OF CHANGE:		20080509

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Mercer Stuart W.
		CENTRAL INDEX KEY:			0001407205

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33606
		FILM NUMBER:		08819785

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		441-278-9000

	MAIL ADDRESS:	
		STREET 1:		C/O VALIDUS RE
		STREET 2:		48 PAR-LA-VILLE ROAD, SUITE 1790
		CITY:			HAMILTON HM11
		STATE:			D0
		ZIP:			HM11

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			VALIDUS HOLDINGS LTD
		CENTRAL INDEX KEY:			0001348259
		STANDARD INDUSTRIAL CLASSIFICATION:	FIRE, MARINE & CASUALTY INSURANCE [6331]
		IRS NUMBER:				000000000

	BUSINESS ADDRESS:	
		STREET 1:		19 PAR-LA-VILLE ROAD
		CITY:			HAMILTON HM11 BERMUDA
		STATE:			D0
		ZIP:			00000
		BUSINESS PHONE:		441-278-9000

	MAIL ADDRESS:	
		STREET 1:		19 PAR-LA-VILLE ROAD
		CITY:			HAMILTON HM11 BERMUDA
		STATE:			D0
		ZIP:			00000
</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>2008-05-07</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001348259</issuerCik>
        <issuerName>VALIDUS HOLDINGS LTD</issuerName>
        <issuerTradingSymbol>VR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001407205</rptOwnerCik>
            <rptOwnerName>Mercer Stuart W.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O VALIDUS HOLDINGS, LTD.</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 1790, 48 PAR-LA-VILLE ROAD</rptOwnerStreet2>
            <rptOwnerCity>HAMILTON</rptOwnerCity>
            <rptOwnerState>D0</rptOwnerState>
            <rptOwnerZipCode>HM11</rptOwnerZipCode>
            <rptOwnerStateDescription>BERMUDA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Exec.V.P. and Chief Risk Off.</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-05-07</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>24560</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>210059</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ John Schuster, as Attorney-in-fact</signatureName>
        <signatureDate>2008-05-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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