SECURITIES AND EXCHANGE COMMISSION


                             Washington, D.C. 20549


                                    FORM 8-K


                                 CURRENT REPORT


     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934


                                 March 12, 2004
                Date of Report (Date of earliest event reported)


                              TRUSTMARK CORPORATION
             (Exact name of registrant as specified in its charter)


  Mississippi                       0-3683                       64-0471500
(State or other            (Commission File Number)             (IRS Employer
 jurisdiction of                                             Identification No.)
 incorporation)



                             248 East Capitol Street
                                Jackson, MS 39201
          (Address, including zip code, of principal executive office)


                                 (601) 208-5111
              (Registrant's telephone number, including area code)


Item 5.   Other Events and Regulation FD Disclosure

Trustmark Corporation  (NASDAQ:TRMK)  announced that Trustmark National Bank has
completed the purchase of five  branches of Allied  Houston Bank as of the close
of business  today.  Under the terms of the  agreement  dated  December 9, 2003,
Trustmark  acquired  five  branches  serving  the  greater  Houston  market with
approximately  $145  million  in loans and $160  million in  deposits  for a $10
million deposit premium.

Richard G. Hickson, Chairman and CEO of Trustmark,  stated, "We are delighted to
expand the Trustmark  franchise  into the Houston  market and welcome our newest
clients and  associates to the  Trustmark  family.  The clients  served by these
offices and the demographics of Houston represent an outstanding opportunity for
Trustmark.  We look forward to providing banking and financial  solutions in one
of the fastest growing and most desirable markets in the country."

Hickson also announced Lee D. Cutrone,  Jr., has been elected  President and CEO
of the Texas Division of Trustmark  National  Bank.  Cutrone will be responsible
for  directing  the  banking and  financial  services  activities  in Texas with
primary  emphasis on expanding  the  company's  presence in the greater  Houston
market.

Cutrone  has  acquired  extensive  managerial   experience  within  the  banking
community  during  his nearly  thirty-year  financial  career.  Prior to joining
Trustmark,  Cutrone was City  President  for Compass  Bank in Houston,  where he
focused on small  business,  mid-market,  residential and commercial real estate
lending.  Previously,  his career included broad experience in senior management
positions within international,  corporate and commercial banking,  primarily in
the Pittsburgh area PNC Bank and ABN Amro.

"We are delighted with our expansion into Texas and the  opportunity to have Lee
manage our Texas  division," said Hickson.  "After having  experienced  eighteen
years of my  banking  career  in  Texas,  I  understand  the  caliber  of person
necessary  to  operate  a  successful  organization  in  this  marketplace.  Lee
possesses  an  extensive  knowledge  of  the  Houston  market,  and  his  proven
leadership  abilities  will  benefit  Trustmark  as we expand our  position as a
financial services company in Texas. As President and CEO of the Texas Division,
he will play a significant role in the future of Trustmark."

"It  is  with  great  enthusiasm  that I  accept  this  new  challenge  and  the
opportunity to advance the Trustmark business philosophy throughout Texas," said
Cutrone.  "Trustmark has consistently been recognized as an outstanding business
leader  in the  financial  services  industry,  and I share  the  commitment  to
superior  customer   satisfaction   exemplified  by  Trustmark   associates  and
directors.  I look  forward  to  being  associated  with  Trustmark's  continued
success."

A graduate of the University of Pittsburgh  with a master's degree in Public and
International  Affairs,  Cutrone also served in the United States Army from 1971
until 1974. He has been active in community  service,  most recently  affiliated
with  boards for the Boy Scouts of  America,  as well as the  University  of St.
Thomas and the World Affairs Council both in Houston, Texas.

Trustmark  is a financial  services  company  providing  banking  and  financial
solutions through over 145 offices and 2,400 associates in Mississippi, Florida,
Tennessee and Texas. For additional information, visit Trustmark's web site at
www.trustmark.com.

Trustmark's  investor  contacts are Zach Wasson,  Executive  Vice  President and
Chief Financial  Officer  (601-208-6816),  and Joseph Rein, First Vice President
(601-208-6898). Trustmark's media contact is Gray Wiggers, Senior Vice President
(601-208-5942).



                                   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.

                              TRUSTMARK CORPORATION


BY:        /s/ Louis E. Greer
           ------------------
           Louis E. Greer
           Chief Accounting Officer

DATE:      March 12, 2004