EXHIBIT 24.1

                                POWER OF ATTORNEY

     Each of the  undersigned  directors and officers of First Horizon  National
Corporation, a Tennessee corporation (the "Company"),  hereby appoints Marlin L.
Mosby, III, James F. Keen, Clyde A. Billings,  Jr., and Milton A. Gutelius, Jr.,
and each of them or their  successors as officers of the Company  acting singly,
the true and lawful agents and attorneys of the undersigned,  with full power of
substitution  and  re-substitution,   to  do  all  things  and  to  execute  all
instruments  which any of them may deem  necessary  or  advisable  to enable the
Company to comply with the  Securities  Act of 1933, as amended,  and any rules,
regulations  and  requirements  of the  Securities  and Exchange  Commission  in
respect thereof,  in connection with the registration under such Act on Form S-8
of: (a) one million  additional  shares of common  stock to be issued  under the
Company's 2003 Equity  Compensation  Plan; (b) five million additional shares of
common stock to be issued under the Company's First Horizon National Corporation
Savings Plan (formerly known as the First Tennessee National Corporation Savings
Plan and Trust); (c) any previously  registered shares of common stock remaining
unissued under the Company's 2003 Equity  Compensation  Plan  (Registration  No.
333-109862);  (d) any  previously  registered  shares of common stock  remaining
unissued under the Company's  First Horizon  National  Corporation  Savings Plan
(Registration No. 33-63809);  and (e) any previously registered shares of common
stock   remaining   unissued  under  the  Company's  older  stock  option  plans
(Registration Nos. 33-9846, 33-40398, 33-44142,  33-57241, 33-64471,  333-16225,
333-16227,  333-70075,  333-91137,  333-92145,  333-92147, 333-56052, 333-73440,
333-73442,  and 333-108750).  This authorization  includes the authority to sign
the name of each of the  undersigned in the capacities  indicated  below to such
proposed Registration  Statements to be filed in respect of the shares described
in clauses (a) and (b) above,  and to any  amendments to either of such proposed
Registration  Statements  or to any of the  Registration  Statements  listed  in
clauses (c), (d), or (e) after this date.

     IN WITNESS  WHEREOF,  each of the  undersigned  has executed a copy of this
Power of Attorney as of March 3, 2005.

/s/ J. Kenneth Glass
    J. Kenneth Glass
    Chairman of the Board, President, Chief Exec. Officer, Director
    (Principal Executive Officer)

/s/ Marlin L. Mosby, III
    Marlin L. Mosby, III
    Executive Vice President and Chief Financial Officer
    (Principal Financial Officer)

/s/ James F. Keen
    James F. Keen
    Executive Vice President and Corporate Controller
    (Principal Accounting Officer)

/s/ Robert C. Blattberg
    Robert C. Blattberg
    Director

/s/ George E. Cates
    George E. Cates
    Director

/s/ Simon F. Cooper
    Simon F. Cooper
    Director



/s/ James A. Haslam, III
    James A. Haslam, III
    Director

/s/ R. Brad Martin
    R. Brad Martin
    Director

/s/ Vicki R. Palmer
    Vicki R. Palmer
    Director

/s/ Michael D. Rose
    Michael D. Rose
    Director

/s/ Mary F. Sammons
    Mary F. Sammons
    Director

/s/ William B. Sansom
    William B. Sansom
    Director

/s/ Jonathan P. Ward
    Jonathan P. Ward
    Director

/s/ Luke Yancy III
    Luke Yancy III
    Director