EXHIBIT 5.1

Board of Directors
Total Fina Elf S.A.
2 place de la Coupole
92078 Paris La Défense Cedex
France

Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, D.C. 20549

Paris, March 11, 2003

Dear Ladies and Gentlemen:

I am the General Counsel of Total Fina Elf S.A. (the “Corporation”), and have directly supervised counsel for the Corporation in connection with the filing of a registration statement on Form S-8 with exhibits thereto (the “Registration Statement”) by the Corporation under the Securities Act of 1933, as amended, and the rules and regulations thereunder, for registration of up to 446,070 shares, nominal value 10 euros per share, of the Corporation (the “Shares”). The Shares are issuable to employees of the Corporation upon exercise of stock options granted under each of the following plans sponsored by Total Fina Elf S.A.: 2002 Stock Option Plan, 2001 Stock Option Plan, 2000 Stock Option Plan, 1999 Stock Option Plan and 1998 Stock Option Plan (collectively, the “Plans”).

I am familiar with the preparation of the Registration Statement and have made such further investigation, either directly or through counsel acting under my direct supervision, as I have deemed pertinent and necessary as a basis for this opinion.

Based upon, and subject to, the foregoing, it is my opinion that the Shares are duly authorized and, when issued in accordance with the terms of the Plans, and upon compliance with applicable securities laws, will be, assuming no change in the applicable law or pertinent facts, validly issued, fully paid and non-assessable.

I hereby consent to the filing of this opinion as Exhibit 5.1 to the Registration Statement. In giving the foregoing consent, I do not admit that I am within the category of persons whose consent is required under Section 7 of the Securities Act of 1933, as amended, or the rules and regulations of the Securities and Exchange Commission promulgated thereunder.

Very truly yours,

/s/ Alain-Marc Irissou
General Counsel
Alain-Marc Irissou