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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0001181431-10-036190.txt : 20100702
<SEC-HEADER>0001181431-10-036190.hdr.sgml : 20100702
<ACCEPTANCE-DATETIME>20100702201628
ACCESSION NUMBER:		0001181431-10-036190
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20100702
FILED AS OF DATE:		20100702
DATE AS OF CHANGE:		20100702

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			OCONNOR JAMES J
		CENTRAL INDEX KEY:			0001017988
		STATE OF INCORPORATION:			IL
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-02116
		FILM NUMBER:		10937399

	MAIL ADDRESS:	
		STREET 1:		C/O SMURFIT STONE CONTAINER CORP
		STREET 2:		150 NORTH MICHIGAN AVE
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60601

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ARMSTRONG WORLD INDUSTRIES INC
		CENTRAL INDEX KEY:			0000007431
		STANDARD INDUSTRIAL CLASSIFICATION:	PLASTICS PRODUCTS, NEC [3089]
		IRS NUMBER:				230366390
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		2500 COLUMBIA AVE
		CITY:			LANCASTER
		STATE:			PA
		ZIP:			17603
		BUSINESS PHONE:		7173970611

	MAIL ADDRESS:	
		STREET 1:		2500 COLUMBIA AVE
		CITY:			LANCASTER
		STATE:			PA
		ZIP:			17603

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ARMSTRONG CORK CO
		DATE OF NAME CHANGE:	19800611
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd280829.xml
<DESCRIPTION>O'CONNOR, CHAIRMAN GRANT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-07-02</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000007431</issuerCik>
        <issuerName>ARMSTRONG WORLD INDUSTRIES INC</issuerName>
        <issuerTradingSymbol>AWI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001017988</rptOwnerCik>
            <rptOwnerName>OCONNOR JAMES J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ARMSTRONG WORLD INDUSTRIES, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>2500 COLUMBIA AVENUE</rptOwnerStreet2>
            <rptOwnerCity>LANCASTER</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>17603</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <transactionDate>
                <value>2010-07-02</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1449</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>17729</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents restricted stock units granted under the 2008 Directors Stock Unit Plan, consisting of the equity grant portion awarded to Mr. O'Connor for his service as Chairman of the Board of Directors from March through October 2010. The units will vest (continent upon director's continued service as of such date) on October 29, 2010 and shall be subject to other terms specified in the 2008 Plan.</footnote>
        <footnote id="F2">Represents 3,678 unvested and 14,051 vested restricted stock units.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Michele M. Nicholas, by Power of Attorney</signatureName>
        <signatureDate>2010-07-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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