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                                    FORM 6-K
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                            Report of Foreign Issuer

                      Pursuant to Rule 13a-16 or 15d-16 of
                       the Securities Exchange Act of 1934

                         For the month of October, 2005

                        Commission File Number: 333-07654


                                  ENDESA, S.A.
                 (Translation of Registrant's Name into English)

                              Ribera del Loira, 60
                               28042 Madrid, Spain
                     (Address of principal executive office)

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

      Indicate by check mark if the registrant is submitting the Form 6-K
                  in paper as permitted by Regulation S-T Rule 101(b)(1):
                        Yes                 No         X
                               -----                 -----

       Indicate by check mark if the registrant is submitting the Form 6-K
             in paper as permitted by Regulation S-T Rule 101(b)(7):
                        Yes                 No         X
                               -----                 -----

          Indicate by check mark whether by furnishing the information
             contained in this Form, the Registrant 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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                                   SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorized.

                                         ENDESA, S.A.

Dated: October 31, 2005       By: /s/ Alvaro Perez de Lema
                                  ------------------------
                              Name: Alvaro Perez de Lema
                              Title: Manager of North America Investor Relations