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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0001181431-09-038346.txt : 20090806
<SEC-HEADER>0001181431-09-038346.hdr.sgml : 20090806
<ACCEPTANCE-DATETIME>20090806171933
ACCESSION NUMBER:		0001181431-09-038346
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20090805
FILED AS OF DATE:		20090806
DATE AS OF CHANGE:		20090806

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Daniels Michael E
		CENTRAL INDEX KEY:			0001333915

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-02360
		FILM NUMBER:		09992678

	MAIL ADDRESS:	
		STREET 1:		IBM CORPORATION
		STREET 2:		294 ROUTE 100
		CITY:			SOMERS
		STATE:			NY
		ZIP:			10589

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			INTERNATIONAL BUSINESS MACHINES CORP
		CENTRAL INDEX KEY:			0000051143
		STANDARD INDUSTRIAL CLASSIFICATION:	COMPUTER & OFFICE EQUIPMENT [3570]
		IRS NUMBER:				130871985
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1 NEW ORCHARD ROAD
		CITY:			ARMONK
		STATE:			NY
		ZIP:			10504
		BUSINESS PHONE:		9144991900

	MAIL ADDRESS:	
		STREET 1:		1 NEW ORCHARD RD
		CITY:			ARMONK
		STATE:			NY
		ZIP:			10504
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd250038.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-08-05</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000051143</issuerCik>
        <issuerName>INTERNATIONAL BUSINESS MACHINES CORP</issuerName>
        <issuerTradingSymbol>IBM</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001333915</rptOwnerCik>
            <rptOwnerName>Daniels Michael E</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>IBM CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>294 ROUTE 100</rptOwnerStreet2>
            <rptOwnerCity>SOMERS</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10589</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Senior Vice President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
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            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2009-08-05</value>
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            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionAmounts>
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                </transactionShares>
                <transactionPricePerShare>
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                <transactionCode>S</transactionCode>
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                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
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                <sharesOwnedFollowingTransaction>
                    <value>58144.1005</value>
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            <securityTitle>
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            <transactionDate>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionAmounts>
                <transactionShares>
                    <value>850.0000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>118.2700</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
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            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>57294.1005</value>
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            <securityTitle>
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            <transactionDate>
                <value>2009-08-05</value>
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                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionAmounts>
                <transactionShares>
                    <value>700.0000</value>
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                <transactionPricePerShare>
                    <value>118.3000</value>
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                    <value>D</value>
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                <transactionPricePerShare>
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                <value>Common Stock</value>
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                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionAmounts>
                <transactionShares>
                    <value>300.0000</value>
                </transactionShares>
                <transactionPricePerShare>
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                </transactionPricePerShare>
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    <ownerSignature>
        <signatureName>D. Cummins for M. E. Daniels by power-of-attorney</signatureName>
        <signatureDate>2009-08-06</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----