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<SEC-DOCUMENT>0001171964-10-000001.txt : 20100331
<SEC-HEADER>0001171964-10-000001.hdr.sgml : 20100331
<ACCEPTANCE-DATETIME>20100331164527
ACCESSION NUMBER:		0001171964-10-000001
CONFORMED SUBMISSION TYPE:	D/A
PUBLIC DOCUMENT COUNT:		1
ITEM INFORMATION:		Rule 506
ITEM INFORMATION:		Investment Company Act Section 3(c)
ITEM INFORMATION:		Section 3(c)(7)
FILED AS OF DATE:		20100331
DATE AS OF CHANGE:		20100331
EFFECTIVENESS DATE:		20100331

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PIMCO Absolute Return Strategy IV Offshore Fund 1 Ltd
		CENTRAL INDEX KEY:			0001171964
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			E9
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		D/A
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	021-42739
		FILM NUMBER:		10719757

	BUSINESS ADDRESS:	
		STREET 1:		WALKERS CORPORATE SERVICES LIMITED
		STREET 2:		WALKER HOUSE, 87 MARY STREET
		CITY:			GEORGE TOWN, GRAND CAYMAN
		STATE:			E9
		ZIP:			KY1-9002
		BUSINESS PHONE:		345.949.0100

	MAIL ADDRESS:	
		STREET 1:		WALKERS CORPORATE SERVICES LIMITED
		STREET 2:		WALKER HOUSE, 87 MARY STREET
		CITY:			GEORGE TOWN, GRAND CAYMAN
		STATE:			E9
		ZIP:			KY1-9002

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PIMCO GLOBAL RELATIVE VALUE OFFSHORE FUND I LTD
		DATE OF NAME CHANGE:	20020424
</SEC-HEADER>
<DOCUMENT>
<TYPE>D/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
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        <cik>0001171964</cik>
        <entityName>PIMCO Absolute Return Strategy IV Offshore Fund 1 Ltd</entityName>
        <issuerAddress>
            <street1>WALKERS CORPORATE SERVICES LIMITED</street1>
            <street2>WALKER HOUSE, 87 MARY STREET</street2>
            <city>GEORGE TOWN, GRAND CAYMAN</city>
            <stateOrCountry>E9</stateOrCountry>
            <zipCode>KY1-9002</zipCode>
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        <issuerPhoneNumber>(345) 949-0100</issuerPhoneNumber>
        <jurisdictionOfInc>CAYMAN ISLANDS</jurisdictionOfInc>
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            <previousName>PIMCO GLOBAL RELATIVE VALUE OFFSHORE FUND I LTD</previousName>
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        <entityTypeOtherDesc>Exempted Company</entityTypeOtherDesc>
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            <moreThanOneYear>true</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isPooledInvestmentFundType>true</isPooledInvestmentFundType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>100000</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>Indefinite</totalOfferingAmount>
            <totalAmountSold>1191739000</totalAmountSold>
            <totalRemaining>Indefinite</totalRemaining>
            <clarificationOfResponse></clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>31</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
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                <dollarAmount>0</dollarAmount>
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            <clarificationOfResponse></clarificationOfResponse>
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        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>PIMCO Absolute Return Strategy IV Offshore Fund 1 Ltd</issuerName>
                <signatureName>/s/ Michelle M. Wilson-Clarke</signatureName>
                <nameOfSigner>Michelle M. Wilson-Clarke</nameOfSigner>
                <signatureTitle>Director of the Issuer</signatureTitle>
                <signatureDate>2010-03-25</signatureDate>
            </signature>
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</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----