Prospectus Supplement #4                       Filed pursuant to Rule 424(b)(3)
(To Prospectus Dated May 29, 2001)                   Registration No. 333-58038


                       AFFILIATED COMPUTER SERVICES, INC.

                                  $316,990,000

         3.50% Convertible Subordinated Notes due February 15, 2006 and
      3,649,094 Shares of Class A Common Stock, $0.01 Par Value Per Share,
                      Issuable Upon Conversion of the Notes

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         This prospectus supplement relates to the resale by the holders of
Affiliated Computer Services, Inc. 3.50% Convertible Subordinated Notes Due
February 15, 2006 and 3,649,094 shares of Class A Common Stock, $0.01 par value
per share, issuable upon conversion of the notes.

         This prospectus supplement should be read in conjunction with, and may
not be delivered or utilized without, the prospectus dated May 29, 2001 relating
to such notes and shares, including any amendments or supplements thereto. The
terms of the notes are set forth in the prospectus.

         The information in the table appearing under the heading "Selling
Securityholders" in the prospectus is amended by adding the information below
with respect to persons not previously listed in the prospectus or in any
amendments or supplements thereto:




                                                                                NUMBER OF SHARES OF CLASS A COMMON STOCK
                                                                                ----------------------------------------
                                                               PRINCIPAL
                                                               AMOUNT OF
                                                                 NOTES
                                                              BENEFICIALLY
                                                                OWNED AND     BENEFICIALLY     OFFERED      OWNED AFTER
              NAME OF SELLING SECURITYHOLDER                 OFFERED HEREBY     OWNED(1)        HEREBY      THE OFFERING
              ------------------------------                 --------------     --------        ------      ------------
                                                                                                
NOT PREVIOUSLY LISTED

Gulf Investment Corporation...........................            350,000          4,029          4,029            -0-



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(1)      These shares of Class A Common Stock are issuable upon conversion of
         the notes.

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           The date of this prospectus supplement is November 29, 2001