AUDIT COMMITTEE CHARTER
FIRST HORIZON NATIONAL CORPORATION

(As Amended and Restated January 20, 2004, Effective March 31, 2004)

Establishment and Purposes of the Committee

Acting pursuant to Tennessee Code Annotated Section 48-18-206, Article 11(b)(8) of the Corporation's restated charter, as amended, and Section 3.5 of the Corporation's bylaws, as amended, the Board of Directors of First Horizon National Corporation hereby creates the Audit Committee (the "Committee") of the Board of Directors, which shall: (1) assist the Board of Directors in its oversight of (a) the Corporation's accounting and financial reporting principles and policies and internal audit controls and procedures, (b) the integrity of the Corporation's financial statements, (c) the Corporation's compliance with legal and regulatory requirements, (d) the independent auditor's qualifications and independence, and (e) the performance of the independent auditor and Corporation's internal audit function; and (2) prepare the report to be included in the Corporation's annual proxy statement pursuant to the proxy rules of the Securities and Exchange Commission ("SEC").

The function of the Committee is oversight. Management of the Corporation is responsible for preparation, presentation and integrity of the Corporation's financial statements. Management is responsible for maintaining appropriate accounting and financial reporting principles and policies and internal controls and procedures to provide for compliance with accounting standards and applicable laws and regulations, and the internal auditor is responsible for testing such internal controls and procedures. The independent auditor is responsible for planning and carrying out a proper audit of the Corporation's annual financial statements, reviews of the Corporation's quarterly financial statements prior to the filing of each quarterly report on Form 10-Q, and other procedures. It is recognized that, in fulfilling their responsibilities hereunder, members of the Committee are not full-time employees of the Corporation and are not, and do not represent themselves to be, performing the functions of accountants or auditors . As such, it is not the duty or responsibility of the Committee or its members to conduct "field work" or other types of auditing or accounting reviews or procedures or to set auditor independence standards, and each member of the Committee shall be entitled to rely on (1) the integrity of those persons and organizations within and outside the Corporation from which it receives information, (2) the accuracy of the financial and other information provided to the Committee by such persons or organizations absent actual knowledge to the contrary (which shall be promptly reported to the Board) and (3) the representations made by management as to any non-audit services provided by the independent auditor to the Corporation. Further, in fulfilling their responsibilities hereunder, the members of the Committee will incorporate the use of reasonable materiality standards, including the size of the Corporation and the nature, scope and risks of the activities conducted.

The independent auditor for the Corporation is accountable to the Committee as representatives of the shareholders and must report directly to the Committee. The Committee has the authority and responsibility directly to appoint (subject, if applicable, to shareholder ratification), retain, compensate, evaluate and terminate the Corporation's independent auditor and to oversee the work of such independent auditor.

The independent auditor shall submit to the Committee annually a formal written statement (the "Auditor's Statement") describing: the independent auditor's internal quality-control procedures; any material issues raised by the most recent internal quality-control review or peer review of the independent auditor, or by any inquiry or investigation by governmental or professional authorities, within the preceding five years, respecting one or more independent audits carried out by the independent auditor, and any steps taken to deal with such issues; and (to assess the independent auditor's independence) all relationships between the independent auditor and the Corporation addressing each non-audit service provided to the Corporation and at least the matters set forth in Independence Standards Board Standard No. 1. The independent auditor shall submit to the Committee annually a formal written statement of the aggregate fees billed for each of the last two fiscal years for professional services rendered by the independent auditor in the following categories (as defined by the rules of the SEC): audit, audit-related, tax and all other services.

Qualifications of Committee Members

The Committee shall consist of at least three members appointed annually by a majority of the entire Board on the recommendation of the Nominating and Corporate Governance Committee of the Board of Directors, acting in its capacity as the nominating committee. Members shall be directors who meet the independence and experience requirements of the NYSE and Section 10A(m)(3) of the Securities Exchange Act of 1934, as amended, and the rules of the SEC promulgated thereunder. Under these requirements as currently adopted, the Board must determine:

No director may serve as a member of the Committee if such director serves on the audit committees of more than two other public companies unless the Board of Directors determines that such simultaneous service would not impair the ability of such director to serve effectively on the Committee, and discloses this determination in the Corporation's annual proxy statement. No member of the Committee may be an affiliated person (as such term is defined in SEC Rule 10A-3, including any exceptions or exemptions permitted thereby) of the Corporation or any subsidiary thereof or may receive any compensation from the Corporation other than (I) director's fees, which may be received in cash, stock options or other in-kind consideration ordinarily available to directors; (ii) a pension or other deferred compensation for prior service that is not contingent on future service; and (iii) any other regular benefits that other directors receive; provided, however, that notwithstanding the foregoing, it shall be permissible for Committee members to receive those types of compensation permitted by the rules of the SEC and the NYSE regarding the independence of audit committee members.

Operation of the Committee

Meetings shall be held at least four times yearly , or more frequently if circumstances dictate, and may be called at any time by the Committee Chairperson or by any two members of the Committee upon written or oral notice to a majority of the members of the Committee prior to the meeting. A quorum shall consist of a majority of the members and the vote of a majority of the members present at a meeting at which a quorum is present shall be the act of the Committee. Proceedings of the Committee over the signature of a member in attendance shall be recorded in a minute book and reflect the names of those in attendance. The Chairperson of the Committee, or acting Chairperson of the meeting, will present a report of Committee activities to the full Board of Directors at its next regularly scheduled meeting. The Secretary of the Board will permanently maintain the minutes of Committee meetings. Meetings may be held jointly with a similar committee of First Tennessee Bank National Association ("Bank") if either the members of the Bank's committee and the members of this Committee are identical or all of the members of the Bank's committee would meet the eligibility requirements of the NYSE, Section 10A(m)(3) and the rules of the SEC, including any exceptions permitted thereby. The Committee may, in its discretion, delegate all or a portion of its authority and duties to a subcommittee of the Committee, and may delegate to the Chairperson the authority to grant pre-approvals of audit and permitted non-audit services as provided herein, provided that the decisions of such Chairperson to grant pre-approvals shall be presented to the full Committee at its next regularly scheduled meeting.

The Committee shall have unrestricted access to Corporation personnel and documents. The Committee will be given the resources and authority appropriate to discharge its duties and responsibilities, including (I) the authority to retain and compensate special or independent counsel, accountants or other experts or consultants to advise the Committee, without seeking approval of the Board or management, and (ii) appropriate funding, as determined by the Committee, for payment of compensation to such counsel, accountants or other experts and consultants. The Committee may request any officer or employee of the Corporation or of the Corporation's outside counsel or independent auditor to attend a meeting of the Committee or to meet with any members of, or consultants to, the Committee. It will be the responsibility of the Committee to maintain free and open means of communication between the directors and management of the Corporation. The Committee shall meet separately periodically with management, the internal auditor, and the independent auditor in separate executive sessions to discuss any matters that the Committee or any of these persons or firms believes should be discussed privately.

Duties and Responsibilities of the Committee

The Committee is hereby delegated full authority with respect to the following matters and such additional matters as may be provided in the bylaws of the Corporation or as the Board of Directors may from time to time by resolution adopted by a majority of the entire Board specify:

[Reflects 4/20/04 holding company name change.]