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                                 UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549
                            _______________________

                                   FORM 6-K

      REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 or 15d-16
                   UNDER THE SECURITIES EXCHANGE ACT OF 1934
                            _______________________

                       Date of Report: October 26, 2004


                              CEMEX, S.A. de C.V.
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            (Exact name of Registrant as specified in its charter)


                                  CEMEX Corp.
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                (Translation of Registrant's name into English)


                             United Mexican States
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                (Jurisdiction of incorporation or organization)


         Av. Ricardo Margain Zozaya #325, Colonia del Valle Campestre
                    Garza Garcia, Nuevo Leon, Mexico 66265
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                   (Address of principal executive offices)


Indicate by check mark whether the registrant files or will file annual
reports under cover Form 20-F or Form 40-F.

Form 20-F   X      Form 40-F
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Indicate by check mark whether the registrant by furnishing the information
contained in this Form is also thereby furnishing the information to the
Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of
1934.

Yes                   No    X 
   -------               -------


If "Yes" is marked, indicate below the file number assigned to the registrant
in connection with Rule 12g3-2(b):

N/A
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                                   Contents

     1.   Press release issued by CEMEX, S.A. de C.V. ("CEMEX"), dated October
          25, 2004, announcing that RMC Group p.l.c. ("RMC") posted to its
          shareholders the scheme of arrangement document relating to the
          recommended acquisition of RMC by CEMEX UK Limited, a wholly-owned
          subsidiary of CEMEX (attached hereto as exhibit 1).





                                   SIGNATURE


         Pursuant to the requirements of the Securities Exchange Act of 1934,
CEMEX, S.A. de C.V. has duly caused this report to be signed on its behalf by
the undersigned, thereunto duly authorized.


                                              CEMEX, S.A. de C.V.
                                       -------------------------------------
                                                   (Registrant)


Date:  October 26, 2004                By:  /s/ Ramiro Villarreal
                                          ----------------------------------
                                          Name:  Ramiro Villarreal
                                          Title: General Counsel






                                 EXHIBIT INDEX


EXHIBIT NO.              DESCRIPTION
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1                        Press release issued by CEMEX, S.A. de C.V.
                         ("CEMEX"), dated October 25, 2004, announcing
                         that RMC Group p.l.c. ("RMC") posted to its
                         shareholders the scheme of arrangement
                         document relating to the recommended
                         acquisition of RMC by CEMEX UK Limited, a
                         wholly-owned subsidiary of CEMEX.