-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0001013237-03-000065.txt : 20031015
<SEC-HEADER>0001013237-03-000065.hdr.sgml : 20031013
<ACCEPTANCE-DATETIME>20031015155925
ACCESSION NUMBER:		0001013237-03-000065
CONFORMED SUBMISSION TYPE:	5
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030831
FILED AS OF DATE:		20031015

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			HADLEY PHILIP A
		CENTRAL INDEX KEY:			0001166908

	FILING VALUES:
		FORM TYPE:		5
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-11869
		FILM NUMBER:		03941949

	BUSINESS ADDRESS:	
		STREET 1:		FACTSET RESEARACH SYSTEMS
		STREET 2:		ONE GREENWICH PLAZA
		CITY:			GREENWICH
		STATE:			CT
		ZIP:			06830

	MAIL ADDRESS:	
		STREET 1:		FACTSET RESEARCH SYSTEMS
		STREET 2:		ONE GREENWICH PLAZA
		CITY:			GREENWICH
		STATE:			CT
		ZIP:			06830

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FACTSET RESEARCH SYSTEMS INC
		CENTRAL INDEX KEY:			0001013237
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER PROGRAMMING, DATA PROCESSING, ETC. [7370]
		IRS NUMBER:				133362547
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0831

	BUSINESS ADDRESS:	
		STREET 1:		ONE GREENWICH PLAZA
		CITY:			GREENWICH
		STATE:			CT
		ZIP:			06830
		BUSINESS PHONE:		2038631500

	MAIL ADDRESS:	
		STREET 1:		ONE GREENWICH PLAZA
		CITY:			GREENWICH
		STATE:			CT
		ZIP:			06830
</SEC-HEADER>
<DOCUMENT>
<TYPE>5
<SEQUENCE>1
<FILENAME>form5-pah7_ex.xml
<TEXT>
<XML>
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<!-- - EDGAR Ease Plus 1.0                                   07/25/03  TT    -->
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>5</documentType>
   <periodOfReport>2003-08-31</periodOfReport>
   <notSubjectToSection16>0</notSubjectToSection16>
    <form3HoldingsReported>0</form3HoldingsReported>

    <form4TransactionsReported>0</form4TransactionsReported>

    <issuer>
        <issuerCik>0001013237</issuerCik>
        <issuerName>FACTSET RESEARCH SYSTEMS INC</issuerName>
        <issuerTradingSymbol>FDS</issuerTradingSymbol>
   </issuer>
   <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001166908</rptOwnerCik>
            <rptOwnerName>HADLEY PHILIP A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>FACTSET RESEARACH SYSTEMS</rptOwnerStreet1>
            <rptOwnerStreet2>ONE GREENWICH PLAZA</rptOwnerStreet2>
            <rptOwnerCity>GREENWICH</rptOwnerCity>
            <rptOwnerState>CT</rptOwnerState>
            <rptOwnerZipCode>06830</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
         <isDirector>1</isDirector>
         <isOfficer>1</isOfficer>
         <isTenPercentOwner>0</isTenPercentOwner>
         <isOther>0</isOther>
         <officerTitle>Chairman of the Board and CEO</officerTitle>
      </reportingOwnerRelationship>
   </reportingOwner>
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      </securityTitle>
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      <transactionAmounts>
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         <transactionPricePerShare>
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   <nonDerivativeTransaction>
      <securityTitle>
         <value>FactSet Research Systems Common Stock</value>
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      <transactionDate>
         <value>2002-12-31</value>
      </transactionDate>
      <transactionCoding>
         <transactionFormType>5</transactionFormType>
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         <equitySwapInvolved>0</equitySwapInvolved>
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      <transactionAmounts>
         <transactionShares>
           <value>1450</value>
         </transactionShares>
         <transactionPricePerShare>
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           <value>D</value>
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         <sharesOwnedFollowingTransaction>
           <value>685447</value>
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      <ownershipNature>
         <directOrIndirectOwnership>
            <value>D</value>
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   </nonDerivativeTransaction>
   <nonDerivativeTransaction>
      <securityTitle>
         <value>FactSet Research Systems Common Stock</value>
      </securityTitle>
      <transactionDate>
         <value>2003-02-28</value>
      </transactionDate>
      <transactionCoding>
         <transactionFormType>5</transactionFormType>
         <transactionCode>A</transactionCode>
         <equitySwapInvolved>0</equitySwapInvolved>
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      <transactionAmounts>
         <transactionShares>
           <value>312</value>
         </transactionShares>
         <transactionPricePerShare>
           <value>21.75</value>
         </transactionPricePerShare>
         <transactionAcquiredDisposedCode>
           <value>A</value>
         </transactionAcquiredDisposedCode>
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      <postTransactionAmounts>
         <sharesOwnedFollowingTransaction>
           <value>685759</value>
         </sharesOwnedFollowingTransaction>
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      <ownershipNature>
         <directOrIndirectOwnership>
            <value>D</value>
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   </nonDerivativeTransaction>
   <nonDerivativeTransaction>
      <securityTitle>
         <value>FactSet Research Systems Common Stock</value>
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      <transactionDate>
         <value>2003-03-21</value>
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      <transactionCoding>
         <transactionFormType>5</transactionFormType>
         <transactionCode>A</transactionCode>
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      <transactionAmounts>
         <transactionShares>
           <value>326</value>
         </transactionShares>
         <transactionPricePerShare>
           <value>32.85</value>
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         <transactionAcquiredDisposedCode>
           <value>A</value>
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      <postTransactionAmounts>
         <sharesOwnedFollowingTransaction>
           <value>686085</value>
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      <ownershipNature>
         <directOrIndirectOwnership>
            <value>D</value>
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      </ownershipNature>
   </nonDerivativeTransaction>
   <nonDerivativeTransaction>
      <securityTitle>
         <value>FactSet Research Systems Common Stock</value>
      </securityTitle>
      <transactionDate>
         <value>2003-05-30</value>
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         <transactionPricePerShare>
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   </nonDerivativeTransaction>
   <nonDerivativeTransaction>
      <securityTitle>
         <value>FactSet Research Systems Common Stock</value>
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      <transactionDate>
         <value>2003-06-20</value>
      </transactionDate>
      <transactionCoding>
         <transactionFormType>5</transactionFormType>
         <transactionCode>A</transactionCode>
         <equitySwapInvolved>0</equitySwapInvolved>
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      <transactionAmounts>
         <transactionShares>
           <value>307</value>
         </transactionShares>
         <transactionPricePerShare>
           <value>42.00</value>
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         <transactionAcquiredDisposedCode>
           <value>A</value>
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         <sharesOwnedFollowingTransaction>
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      <ownershipNature>
         <directOrIndirectOwnership>
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   <nonDerivativeTransaction>
      <securityTitle>
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      <transactionDate>
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      <transactionCoding>
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      <securityTitle>
         <value>FactSet Research Stock Options</value>
      </securityTitle>
      <conversionOrExercisePrice>
         <value>10.00</value>
      </conversionOrExercisePrice>
      <exerciseDate>
         <value>1999-02-09</value>
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      <expirationDate>
         <value>2008-02-09</value>
      </expirationDate>
      <underlyingSecurity>
         <underlyingSecurityTitle>
           <value>Common Stock</value>
         </underlyingSecurityTitle>
         <underlyingSecurityShares>
           <value>9500</value>
         </underlyingSecurityShares>
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   <derivativeHolding>
      <securityTitle>
         <value>FactSet Research Stock Options</value>
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      <conversionOrExercisePrice>
         <value>19.41</value>
      </conversionOrExercisePrice>
      <exerciseDate>
         <value>2000-03-29</value>
            <footnoteId id="F1"/>
      </exerciseDate>
      <expirationDate>
         <value>2009-03-29</value>
      </expirationDate>
      <underlyingSecurity>
         <underlyingSecurityTitle>
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         <underlyingSecurityShares>
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         </underlyingSecurityShares>
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           <value>D</value>
         </directOrIndirectOwnership>
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   </derivativeHolding>
   <derivativeHolding>
      <securityTitle>
         <value>FactSet Research Stock Options</value>
      </securityTitle>
      <conversionOrExercisePrice>
         <value>33.13</value>
      </conversionOrExercisePrice>
      <exerciseDate>
         <value>2001-03-13</value>
            <footnoteId id="F1"/>
      </exerciseDate>
      <expirationDate>
         <value>2010-03-13</value>
      </expirationDate>
      <underlyingSecurity>
         <underlyingSecurityTitle>
           <value>Common Stock</value>
         </underlyingSecurityTitle>
         <underlyingSecurityShares>
           <value>15000</value>
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           <value>44500</value>
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         <directOrIndirectOwnership>
           <value>D</value>
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   </derivativeHolding>
   <derivativeHolding>
      <securityTitle>
         <value>FactSet Research Stock Options</value>
      </securityTitle>
      <conversionOrExercisePrice>
         <value>33.56</value>
      </conversionOrExercisePrice>
      <exerciseDate>
         <value>2001-09-05</value>
            <footnoteId id="F1"/>
      </exerciseDate>
      <expirationDate>
         <value>2010-09-05</value>
      </expirationDate>
      <underlyingSecurity>
         <underlyingSecurityTitle>
           <value>Common Stock</value>
         </underlyingSecurityTitle>
         <underlyingSecurityShares>
           <value>100000</value>
         </underlyingSecurityShares>
      </underlyingSecurity>
      <postTransactionAmounts>
         <sharesOwnedFollowingTransaction>
           <value>144500</value>
         </sharesOwnedFollowingTransaction>
      </postTransactionAmounts>
      <ownershipNature>
         <directOrIndirectOwnership>
           <value>D</value>
         </directOrIndirectOwnership>
      </ownershipNature>
   </derivativeHolding>
   <derivativeHolding>
      <securityTitle>
         <value>FactSet Research Stock Options</value>
      </securityTitle>
      <conversionOrExercisePrice>
         <value>26.35</value>
      </conversionOrExercisePrice>
      <exerciseDate>
         <value>2002-10-23</value>
            <footnoteId id="F1"/>
      </exerciseDate>
      <expirationDate>
         <value>2011-10-23</value>
      </expirationDate>
      <underlyingSecurity>
         <underlyingSecurityTitle>
           <value>Common Stock</value>
         </underlyingSecurityTitle>
         <underlyingSecurityShares>
           <value>20000</value>
         </underlyingSecurityShares>
      </underlyingSecurity>
      <postTransactionAmounts>
         <sharesOwnedFollowingTransaction>
           <value>164500</value>
         </sharesOwnedFollowingTransaction>
      </postTransactionAmounts>
      <ownershipNature>
         <directOrIndirectOwnership>
           <value>D</value>
         </directOrIndirectOwnership>
      </ownershipNature>
   </derivativeHolding>
   <derivativeHolding>
      <securityTitle>
         <value>FactSet Research Stock Options</value>
      </securityTitle>
      <conversionOrExercisePrice>
         <value>22.45</value>
      </conversionOrExercisePrice>
      <exerciseDate>
         <value>2003-10-07</value>
            <footnoteId id="F1"/>
      </exerciseDate>
      <expirationDate>
         <value>2012-10-07</value>
      </expirationDate>
      <underlyingSecurity>
         <underlyingSecurityTitle>
           <value>Common Stock</value>
         </underlyingSecurityTitle>
         <underlyingSecurityShares>
           <value>20000</value>
         </underlyingSecurityShares>
      </underlyingSecurity>
      <postTransactionAmounts>
         <sharesOwnedFollowingTransaction>
           <value>184500</value>
         </sharesOwnedFollowingTransaction>
      </postTransactionAmounts>
      <ownershipNature>
         <directOrIndirectOwnership>
           <value>D</value>
         </directOrIndirectOwnership>
      </ownershipNature>
   </derivativeHolding>
 </derivativeTable>
   <footnotes>
      <footnote id="F1"> 20% of option grant is exercisable one year from grant date. The remaining options vest 1.67% monthly thereafter for the next four years.</footnote>
      <footnote id="F2"> The disposition was a gift. Share price is not necessary.</footnote>
   </footnotes>
   <ownerSignature>
      <signatureName>Philip A. Hadley</signatureName>
      <signatureDate>2003-10-15</signatureDate>
   </ownerSignature>
</ownershipDocument>

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-----END PRIVACY-ENHANCED MESSAGE-----