July 21, 2004 Securities and Exchange Commission 450 Fifth Street N.W. Washington, D.C. 20549 Re: First Horizon National Corporation Commission file number 0-4491 Quarterly Report on Form 8-K Gentlemen: On behalf of First Horizon National Corporation, included for filing, via EDGAR, is Form 8-K including the Earnings Release for the fiscal quarter ended June 30, 2004. Any requests for additional information or comments with respect to this filing may be addressed to: Marlin L. Mosby III Executive Vice President and Chief Financial Officer, telephone number (901) 523-5620. Sincerely, Debra L. White Vice President, External Reporting Enclosures SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 ------------------------------------------------------------- FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of report (Date of earliest event reported) - July 20, 2004 FIRST HORIZON NATIONAL CORPORATION (Exact Name of Registrant as Specified in Charter) TENNESSEE 000-4491 62-0803242 (State or Other Jurisdiction (Commission (IRS Employer of Incorporation) File Number) Identification No.) 165 MADISON AVENUE MEMPHIS, TENNESSEE 38103 (Address of Principal Executive Office) (Zip Code) Registrant's telephone number, including area code - (901) 523-4444 ITEM 7. Financial Statements and Exhibits (c) Exhibits The following exhibit is furnished pursuant to Item 12, is not to be considered "filed" under the Securities Exchange Act of 1934, as amended ("Exchange Act"), and shall not be incorporated by reference into any of First Horizon National Corporation's ("Corporation") previous or future filings under the Securities Act of 1933, as amended, or the Exchange Act. Exhibit # Description --------- ----------- 99.1 Earnings Release for Quarter Ended 6/30/04 ITEM 12. RESULTS OF OPERATIONS AND FINANCIAL CONDITION Furnished as Exhibit 99.1 is a copy of First Horizon National Corporation's earnings release for the quarter ended June 30, 2004, which was issued July 20, 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 hereunto duly authorized. FIRST HORIZON NATIONAL CORPORATION Date: July 20, 2004 By: /s/ Marlin L. Mosby, III ----------------------------------------- Name: Marlin L. Mosby, III Title: Executive Vice President and Chief Financial Officer Exhibit Index ------------- The following exhibit is furnished pursuant to Item 12, is not to be considered "filed" under the Exchange Act, and shall not be incorporated by reference into any of the Corporation's previous or future filings under the Securities Act of 1933, as amended, or the Exchange Act. Exhibit # Description --------- ----------- 99.1 Earnings Release for Quarter Ended 6/30/04