1 EXHIBIT 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below does hereby constitute and appoint SUSAN SCHMIDT BIES, JAMES F. KEEN, CLYDE A. BILLINGS, JR., and TERESA A. FEHRMAN jointly and each of them severally, his or her true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, to execute and sign the Registration Statement on Form S-4 to be filed with the Securities and Exchange Commission, pursuant to the provisions of the Securities Act of 1933, by First Tennessee National Corporation ("Corporation") relating to the issuance of its Common Stock, par value $2.50 per share, pursuant to the Agreement and Plan of Merger dated as of March 29, 1994, by and between the Corporation and Planters Bank, Tunica, Mississippi, and, further, to execute and sign any and all pre-effective and post-effective amendments thereto and to file the same, with all exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, or their or his or her substitute or substitutes, full power and authority to do and perform each and every act and thing requisite or necessary to be done in and about the premises, as fully to all intents and purposes as the undersigned might or could do in person, hereby ratifying and confirming all the acts that said attorneys-in-fact and agents, or any of them, or their or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof. Signature Title Date --------- ----- ---- Ralph Horn Chief Executive Officer April 27, 1994 - ------------------------------ (principal executive officer) Ralph Horn and a director Susan Schmidt Bies Executive Vice President April 27, 1994 - ------------------------------ and Chief Financial Officer Susan Schmidt Bies (principal financial officer) James F. Keen Senior Vice President and April 27, 1994 - ------------------------------ Controller (principal James F. Keen accounting officer) Jack a. Belz Director April 27, 1994 - ------------------------------ Jack A. Belz Robert C. Blattberg Director April 27, 1994 - ------------------------------ Robert C. Blattberg J. R. Hyde, III Director April 27, 1994 - ------------------------------ J. R. Hyde, III Joseph Orgill, III Director April 27, 1994 - ------------------------------ Joseph Orgill, III Richard E. Ray Director April 27, 1994 - ------------------------------ Richard E. Ray Page 1 of 2 2 Vicki G. Roman Director April 27, 1994 - ------------------------------ Vicki G. Roman Michael D. Rose Director April 27, 1994 - ------------------------------ Michael D. Rose William B. Sansom Director April 27, 1994 - ------------------------------ William B. Sansom Gordon P. Street, Jr. Director April 27, 1994 - ------------------------------ Gordon P. Street, Jr. Ronald Terry Director April 27, 1994 - ------------------------------ Ronald Terry Page 2 of 2