---

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

 

For the month of May, 2004

 

Commission File Number 001-3136

 

---

 

TSAKOS ENERGY NAVIGATION LIMITED

(Translation of registrant’s name into English)

 

---

 

367 Syngrou Avenue, 175 64 P. Faliro, Athens, Greece

(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):             

 

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):             

 

Indicate by check mark whether the registrant by furnishing the information contained in the 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): 82-            .

 

This document contains 5 pages. The exhibit index is located on page 2.

 

---

---

EXHIBIT INDEX

 

99.1

Press Release, dated May 17, 2004.

---

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.

 

Date: May 18, 2004