SECURITIES AND EXCHANGE COMMISSION
                                WASHINGTON, D.C.

                                    FORM 6-K

                            REPORT OF FOREIGN ISSUER
                      PURSUANT TO RULE 13a-16 OR 15d-16 OF
                       THE SECURITIES EXCHANGE ACT OF 1934

                           For the month of July 2004
                           COMMISSION FILE No. 1-31690

                             TRANSCANADA CORPORATION
                 (TRANSLATION OF REGISTRANT'S NAME INTO ENGLISH)

             450 - 1 STREET S.W., CALGARY, ALBERTA, T2P 5H1, CANADA
                    (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)

(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                     Form 40-F   X
                    -----                         -----

(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
                    -----                         -----




Copies of the Registrant's Articles of Incorporation dated February 25, 2003,
Certificate of Incorporation issued February 25, 2003, Articles of Arrangement
dated May 15, 2003, and Certificate of Arrangement issued May 15, 2003 are being
furnished, not filed, and will not be incorporated by reference into any
registration statement filed by TransCanada Corporation under the Securities Act
of 1933, as amended.

A copy of the Registrant's By-law No. 1 dated May 15, 2003 is being furnished,
not filed, and will not be incorporated by reference into any registration
statement filed by TransCanada Corporation under the Securities Act of 1933, as
amended.




                                   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.

                             TRANSCANADA CORPORATION

                             By: /s/ Russell K. Girling
                                 -----------------------------------------------
                                 Russell K. Girling,
                                 Executive Vice-President, Corporate Development
                                 and Chief Financial Officer

                             By: /s/ Rhondda E.S. Grant
                                 -----------------------------------------------
                                 Rhondda E.S. Grant
                                 Vice-President and Corporate Secretary

July 6, 2004




                                 EXHIBIT INDEX

3.1    Registrant's Articles of Incorporation dated February 25, 2003.

3.1.1  Registrant's Certificate of Incorporation issued February 25, 2003.

3.2    Registrant's Articles of Arrangement dated May 15, 2003.

3.2.1  Registrant's Certificate of Arrangement issued May 15, 2003.

3.3    Registrant's By-law No. 1 dated May 15, 2003.