As filed with the Securities and Exchange Commission on October 20, 2003

                                            Registration No. 333-______________

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM S-8
                             REGISTRATION STATEMENT
                                      Under
                           THE SECURITIES ACT OF 1933

                      FIRST TENNESSEE NATIONAL CORPORATION
             (Exact name of registrant as specified in its charter)

       Tennessee                                                     62-0803242
(State of Incorporation)                   (I.R.S. Employer Identification No.)

                               165 Madison Avenue
                            Memphis, Tennessee 38103
                                 (901) 523-4444
                    (Address of principal executive offices)

       First Tennessee National Corporation 2003 Equity Compensation Plan
                            (Full Title of the Plan)

                              HARRY A. JOHNSON, III
                  Executive Vice President and General Counsel
                      First Tennessee National Corporation
                               165 Madison Avenue
                            Memphis, Tennessee 38103
                                 (901) 523-5624
            (Name, address and telephone number of agent for service)

                                 (with copy to:)
                             CLYDE A. BILLINGS, JR.
    Senior Vice President, Assistant General Counsel and Corporate Secretary
                      First Tennessee National Corporation
                               165 Madison Avenue
                            Memphis, Tennessee 38103
                                 (901) 523-5679

                                                                                                      

                                          CALCULATION OF REGISTRATION FEE
===================================================================================================================================
    Title of Securities to be        Amount to be     Proposed Maximum Offering     Proposed Maximum Aggregate        Amount of
           Registered               Registered(1)          Price Per Share                Offering Price          Registration Fee
-----------------------------------------------------------------------------------------------------------------------------------
Common Stock and                    3,000,000 (2)             $43.83 (3)                 $131,490,000 (3)           $ 10,637.54
Associated Rights
-----------------------------------------------------------------------------------------------------------------------------------


(1)      This  Registration  Statement shall also cover any additional shares of
         the  Registrant's  Common  Stock that become  issuable  under the First
         Tennessee National Corporation 2003 Equity Compensation Plan (the "2003
         Plan") by reason of any  dividend,  stock  split,  recapitalization  or
         other similar  transactions  effected  without receipt of consideration
         that  increases the number of shares of the  Registrant's  Common Stock
         outstanding.

(2)      This figure  represents the number of shares of Common Stock authorized
         and registered hereby under the 2003 Plan. The maximum number of shares
         which may be sold upon exercise of options  granted under the 2003 Plan
         is subject to adjustment in accordance with certain  anti-dilution  and
         other provisions of such 2003 Plan.

(3)      Calculated pursuant to Rule 457(h)(l), based on the average of the high
         and low prices reported on the New York Stock Exchange for Registrant's
         Common Stock on October 16, 2003

         Pursuant to Rule 462 of the Securities Act of 1933 Act, as amended, the
Registration  Statement  on Form S-8 shall be  effective  upon  filing  with the
Securities and Exchange Commission.



                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
               --------------------------------------------------

Item 3.  INCORPORATION OF DOCUMENTS BY REFERENCE

     The following documents filed by First Tennessee National  Corporation (the
"Registrant") with the Securities and Exchange Commission (the "Commission") are
hereby incorporated by reference in this Registration Statement:

     1.   The  Registrant's  most recent annual report on Form 10-K for the year
          ended December 31, 2002.

     2.   The Registrant's Quarterly Reports on Form 10-Q for the quarters ended
          March 31, 2003 and June 30, 2003.

     3.   The Registrant's Current Reports on Form 8-K filed with the Commission
          dated May 7, 2003, May 12, 2003, June 9, 2003, and July 30, 2003.

     4.   The description of Registrant's Common Stock contained in Registrant's
          registration  statement  on Form 8-A,  filed  July 26,  1999,  and any
          amendment   or  report   filed  for  the  purpose  of  updating   such
          description.

     5.   The  description  of  Registrant's   shareholder   protection   rights
          contained in  Registrant's  registration  statement on Form 8-A, filed
          October 23, 1998, and any amendment or report filed for the purpose of
          updating such description.

     In addition, all documents subsequently filed by the Registrant pursuant to
Sections 13(a),  13(c), 14 and 15(d) of the Securities Exchange Act of 1934 (the
"1934 Act"),  prior to the filing of a post-effective  amendment which indicates
that all securities  offered have been sold or which  deregisters all securities
then remaining  unsold,  shall be deemed to be incorporated by reference  herein
and to be a part  thereof  from  the  date  of  filing  of such  documents.  Any
statement  contained in a document  incorporated or deemed to be incorporated by
reference  herein shall be deemed to be modified or  superseded  for purposes of
this Registration  Statement to the extent that a statement  contained herein or
in any  other  subsequently  filed  document  which  also is or is  deemed to be
incorporated by reference  herein  modifies or supersedes  such  statement.  Any
statement so modified or superseded  shall not be deemed,  except as so modified
or superseded, to constitute a part of this Registration Statement.

Item 4.  DESCRIPTION OF SECURITIES

     No response is required to this item.

Item 5.  INTERESTS OF NAMED EXPERTS AND COUNSEL

     Section 11(a) of the  Securities  Act of 1933, as amended (the "1933 Act"),
provides  that if any part of a  registration  statement  at the time it becomes
effective  contains an untrue  statement of a material  fact or omits a material
fact required to be stated therein or necessary to make the  statements  therein
not misleading,  any person  acquiring a security  pursuant to the  registration
statement  may assert a claim  against,  among  others,  an  accountant  who has
consented to be named as having certified any part of the registration statement
or as having  prepared any report for use in  connection  with the  registration
statement unless it is proven that at the time such person acquired the security
the person knew of such untruth or omission.

     The Registrant  dismissed  Arthur  Andersen LLP ("Arthur  Andersen") as its
independent  public accountant on May 15, 2002, as described in the Registrant's
Form 8-K dated May 15, 2002, and filed May 16, 2002. After  reasonable  efforts,
the  Registrant  has not been able to obtain  Arthur  Andersen's  consent to the
naming of that firm as an expert or to the  incorporation by reference of Arthur
Andersen's audit report dated January 15, 2002 in this Registration Statement as
required by Section 7 of the Securities Act.

         SEC  Rule  437a  promulgated  pursuant  to the  1933  Act  permits  the
registrant  to file  registration  statements  that  contain or  incorporate  by



reference  financial  statements in which Arthur Andersen had been acting as the
independent  public  accountant  without  filing the  written  consent of Arthur
Andersen  required  by  Section  7 of the 1933 Act.  The lack of a consent  from
Arthur  Andersen will generally make  unavailable a claim against the accountant
relating to securities  acquired pursuant to this  Registration  Statement under
Section  11(a) of the 1933  Act for any  untrue  statement  of a  material  fact
contained  in  the  financial  statements  audited  by  Arthur  Andersen  or any
omissions  to state a material  fact  required  to be stated in those  financial
statements or necessary to make the statements in those financial statements not
misleading.

Item 6.  INDEMNIFICATION OF DIRECTORS AND OFFICERS

     Tennessee Code Annotated Sections  48-18-501 through 48-18-509  authorize a
corporation to provide for the indemnification of officers, directors, employees
and agents in terms sufficiently broad to permit  indemnification  under certain
circumstances for liabilities  (including  reimbursement for expenses  incurred)
arising  under the 1933 Act. The  Registrant  has adopted the  provisions of the
Tennessee statute pursuant to Article Six of its Bylaws. Also the Registrant has
a "Directors' and Officers'  Liability Insurance Policy" which provides coverage
sufficiently  broad to permit  indemnification  under certain  circumstances for
liabilities  (including  reimbursement for expenses  incurred) arising under the
1933 Act.

     Tennessee Code Annotated,  Section 48-12-102,  permits the inclusion in the
charter of a Tennessee  corporation  of a provision,  with  certain  exceptions,
eliminating the personal  monetary  liability of directors to the corporation or
its  shareholders for breach of the duty of care. The Registrant has adopted the
provisions of the statute as Article 13 of its Charter.

     Article  Six of the  Bylaws  requires  the  Registrant  to  indemnify  each
director  and any officers  designated  by the Board of  Directors,  and advance
expenses,  to the maximum extent not  prohibited by law. In accordance  with the
foregoing,  the  Board of  Directors  is  authorized  to enter  into  individual
indemnity  agreements  with the  directors  and such  officers.  Such  indemnity
agreements have been approved for all of the directors and certain officers.

Item 7.  EXEMPTION FROM REGISTRATION CLAIMED

     No response is required to this item.

Item 8.  EXHIBITS

Exhibit Number      Description
--------------      -----------

     4.1            Restated  Charter of the Registrant,  as amended,  attached
                    as Exhibit 3(i) to the  Registrant's Annual  Report on Form
                    10-K for the year  ended  December  31,  1997 and
                    incorporated  herein by reference.

     4.2            Bylaws  of the  Registrant,  as  amended  and  restated,
                    attached  as  Exhibit   3(ii)  to the Registrant's
                    Quarterly   Report on Form  10-Q for the  quarter  ended
                    September  30,  2002 and incorporated herein by reference.

     4.3            First Tennessee National  Corporation  2003 Equity
                    Compensation Plan,  attached as Appendix A to the
                    Registrant's  Definitive Proxy Statement filed with the
                    Securities and Exchange Commission on March 18, 2003 and
                    incorporated herein by reference.

     4.4            Shareholder Protection Rights Agreement, dated as of October
                    20, 1998,  between the Registrant  and First  Tennessee Bank
                    National Association as Rights Agent,  attached as Exhibit 1
                    to the  Registrant's  Registration  Statement  on Form  8-A,
                    filed October 23, 1998 and incorporated herein by reference.

      5             Opinion and Consent of Baker, Donelson,  Bearman, Caldwell
                    & Berkowitz

     23.1           Consent of Baker,  Donelson,  Bearman,  Caldwell & Berkowitz
                    (contained in Exhibit 5)


                                       2


     23.2           Consent of KPMG LLP

      24            Power of Attorney


Item 9.  UNDERTAKINGS

     (a)  The undersigned Registrant hereby undertakes:

          (1)  To file,  during  any  period in which  offers or sales are being
               made, a post-effective  amendment to this Registration  Statement
               to include any material  information  with respect to the plan of
               distribution   not  previously   disclosed  in  the  Registration
               Statement  or any  material  change  to such  information  in the
               Registration Statement.

          (2)  That, for the purpose of determining any liability under the 1933
               Act, each such  post-effective  amendment shall be deemed to be a
               new  registration  statement  relating to the securities  offered
               therein,  and the offering of such  securities at that time shall
               be deemed to be the initial bona fide offering thereof.

          (3)  To  remove  from   registration  by  means  of  a  post-effective
               amendment any of the  securities  being  registered  which remain
               unsold at the termination of the offering.

     (b)  The undersigned Registrant hereby undertakes that, for the purposes of
     determining   any  liability  under  the  1933  Act,  each  filing  of  the
     Registrant's  annual  report  pursuant to Section 13(a) or Section 15(d) of
     the 1934 Act (and,  where  applicable,  each filing of an employee  benefit
     plan's  annual  report  pursuant to Section  15(d) of the 1934 Act) that is
     incorporated by reference in the Registration  Statement shall be deemed to
     be a new registration statement relating to the securities offered therein,
     and the offering of such  securities at that time shall be deemed to be the
     initial bona fide offering thereof.

     (c)  Insofar as indemnification  for liabilities arising under the 1933 Act
     may be permitted to  directors,  officers  and  controlling  persons of the
     Registrant  pursuant  to  the  foregoing  provisions,   or  otherwise,  the
     Registrant  has been  advised  that in the opinion of the  Commission  such
     indemnification  is against  public policy as expressed in the 1933 Act and
     is, therefore, unenforceable. In the event that a claim for indemnification
     against  such  liabilities  (other  than the payment by the  Registrant  of
     expenses incurred or paid by a director,  officer or controlling  person of
     the Registrant in the successful defense of any action, suit or proceeding)
     is asserted by such director,  officer or controlling  person in connection
     with the securities being  registered,  the Registrant will,  unless in the
     opinion  of  its  counsel  the  matter  has  been  settled  by  controlling
     precedent,  submit  to a court of  appropriate  jurisdiction  the  question
     whether such indemnification by it is against public policy as expressed in
     the 1933 Act and will be governed by the final adjudication of such issue.



                           [SIGNATURE PAGE TO FOLLOW]




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                                   SIGNATURES

     Pursuant to the requirements of the 1933 Act, the registrant certifies that
it has reasonable  grounds to believe that it meets all of the  requirements for
filing on Form S-8 and has duly caused this Registration  Statement to be signed
on its behalf by the  undersigned,  thereunto  duly  authorized,  in the City of
Memphis and State of Tennessee, on October 20, 2003.

                          FIRST TENNESSEE NATIONAL CORPORATION



                          By:  /s/ Sarah L. Meyerrose
                               ------------------------------------------------
                               Sarah L. Meyerrose, Executive Vice President -
                               Corporate and Employee Services


Pursuant to the  requirements of the 1933 Act, this  Registration  Statement has
been  signed  by the  following  persons  in  the  capacities  and  on the  date
indicated.

                                                                                         

                  NAME                                   TITLE                                       DATE
                  ----                                   -----                                       ----

/s/ Ralph Horn*                            Chairman of the Board and a Director                October 20, 2003
------------------------------------
Ralph Horn

/s/ J. Kenneth Glass*
------------------------------------       President, Chief Executive Officer and a            October 20, 2003
J. Kenneth Glass                           Director (principal executive officer)


/s/ James F. Keen*                         Executive Vice President, Chief Financial Officer
------------------------------------       and Corporate Controller (principal financial       October 20, 2003
James F. Keen                              officer and principal accounting officer)

/s/ Robert C. Blattberg*
------------------------------------       Director                                            October 20, 2003
Robert C. Blattberg

/s/ George E. Cates*
------------------------------------       Director                                            October 20, 2003
George E. Cates

/s/ James A. Haslam, III*
------------------------------------       Director                                            October 20, 2003
James A. Haslam, III

/s/ R. Brad Martin*
------------------------------------       Director                                            October 20, 2003
R. Brad Martin

/s/ Vicki R. Palmer*
------------------------------------       Director                                            October 20, 2003
Vicki R. Palmer




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             NAME                                     TITLE                                         DATE
             ----                                     -----                                         ----

/s/ Michael D. Ross*
------------------------------------       Director                                            October 20, 2003
Michael D. Ross

/s/ William B. Sansom*
------------------------------------       Director                                            October 20, 2003
William B. Sansom

/s/ Jonathan P. Ward*
------------------------------------       Director                                            October 20, 2003
Jonathan P. Ward

/s/ Luke Yancy, III*
------------------------------------       Director                                            October 20, 2003
Luke Yancy, III

*/s/ Clyde A. Billings, Jr.
------------------------------------                                                           October 20, 2003
Clyde A. Billings, Jr., as
Attorney-in-Fact






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