-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 EwYyqWpufNSjDvygc8ywXqo4NHnLPJvFCiUw1kyrgWmSG6atE0TzBtp5eTracA1u
 Q8fBMTh81q+TCZ5xbNZ1Ng==

<SEC-DOCUMENT>0000899140-06-001020.txt : 20060711
<SEC-HEADER>0000899140-06-001020.hdr.sgml : 20060711
<ACCEPTANCE-DATETIME>20060711181844
ACCESSION NUMBER:		0000899140-06-001020
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060711
FILED AS OF DATE:		20060711
DATE AS OF CHANGE:		20060711

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ALLIED WORLD ASSURANCE CO HOLDINGS LTD
		CENTRAL INDEX KEY:			0001163348
		STANDARD INDUSTRIAL CLASSIFICATION:	FIRE, MARINE & CASUALTY INSURANCE [6331]
		IRS NUMBER:				000000000

	BUSINESS ADDRESS:	
		STREET 1:		43 VICTORIA STREET
		CITY:			HAMILTON
		STATE:			D0
		ZIP:			HM 12
		BUSINESS PHONE:		441-278-5400

	MAIL ADDRESS:	
		STREET 1:		43 VICTORIA STREET
		CITY:			HAMILTON
		STATE:			D0
		ZIP:			HM 12

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ALLIED WORLD ASSURANCE HOLDINGS LTD
		DATE OF NAME CHANGE:	20011207

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Dupont Wesley D
		CENTRAL INDEX KEY:			0001368328

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-32938
		FILM NUMBER:		06956948

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		441-278-5400

	MAIL ADDRESS:	
		STREET 1:		ALLIED WORLD ASSURANCE CO HOLDINGS, LTD
		STREET 2:		43 VICTORIA STREET
		CITY:			HAMILTON
		STATE:			D0
		ZIP:			HM 12
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>dupont_awh3-071106ex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2006-07-11</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001163348</issuerCik>
        <issuerName>ALLIED WORLD ASSURANCE CO HOLDINGS LTD</issuerName>
        <issuerTradingSymbol>AWH</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001368328</rptOwnerCik>
            <rptOwnerName>Dupont Wesley D</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ALLIED WORLD ASSURANCE CO HOLDINGS, LTD</rptOwnerStreet1>
            <rptOwnerStreet2>43 VICTORIA STREET</rptOwnerStreet2>
            <rptOwnerCity>HAMILTON, BERMUDA HM 12</rptOwnerCity>
            <rptOwnerState></rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>SVP, Gen. Counsel &amp; Secretary</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Shares</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>33333</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Employee Stock Warrant (right to buy)</value>
                <footnoteId id="F2"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>28.32</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2006-12-01</value>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <value>2015-12-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>25000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Represents Restricted Stock Units which convert into Common Shares upon the vesting of such units on a one-for-one basis.</footnote>
        <footnote id="F2">These warrants were granted under the Issuer's employee warrant plan and will be converted into options having the same
 exercise price, vesting period, expiration date, and title and amount of underlying securities upon the closing of the
 Issuer's initial public offering.</footnote>
        <footnote id="F3">These securities vest in four equal annual installments with the first installment vesting on the date shown.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Wesley D. Dupont</signatureName>
        <signatureDate>2006-07-11</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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