UNITED STATES
                       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

                                  May 10, 2005
                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                   (IRS Employer
jurisdiction of incorporation)    File Number)               Identification No.)
 
248 East Capitol Street, Jackson, Mississippi                        39201
   (Address of principal executive offices)                       (Zip Code)
                                                                                
Registrant's telephone number, including area code: (601) 208-5111

Check  the  appropriate  box  below  if the  Form  8-K  filing  is  intended  to
simultaneously  satisfy the filing obligation of the registrant under any of the
following provisions:

|_| Written communications pursuant to Rule 425 under the Securities Act (17 CFR
    230.425)

|_| Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
    240.14a-12)

|_| Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange
    Act (17 CFR 240.14d-2(b))

|_| Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange
    Act (17 CFR 240.13e-4(c))



                                TABLE OF CONTENTS

                                                                            
Item 1.01  Entry into a Material Definitive Agreement

Item 1.02  Termination of a Material Definitive Agreement

Item 9.01  Financial Statements and Exhibits

SIGNATURES

EXHIBIT INDEX



Item 1.01 Entry into a Material Definitive Agreement

Adoption of 2005 Stock and Incentive Compensation Plan

On May 10, 2005, the shareholders of Trustmark Corporation  ("Trustmark"),  upon
the  recommendation  of Trustmark's  Board of Directors,  approved the Trustmark
Corporation 2005 Stock and Incentive  Compensation Plan (the "2005 Plan"), which
was adopted by the Board of Directors  on March 8, 2005 and April 19, 2005,  and
replaces the  Trustmark  Corporation  1997 Long Term  Incentive  Plan (the "1997
Plan").  The 2005 Plan became  effective  May 10,  2005,  and subject to earlier
termination by the Board of Directors, terminates on May 9, 2015.
 
The 2005 Plan allows  Trustmark to make grants of  non-qualified  stock options,
incentive stock options,  stock  appreciation  rights (SARs),  restricted stock,
restricted  stock units and  performance  units  (awards) to key  associates and
directors.  The  purpose  of these  awards is to promote a greater  identity  of
interest  between key associates and directors and  Trustmark's  shareholders by
increasing  the  key  associates'  and  directors'   proprietary   interests  in
Trustmark.

The 2005 Plan is administered  by the Human  Resources  Committee of Trustmark's
Board of Directors  (the "Human  Resources  Committee"),  which consists only of
non-employee  directors,  as defined in Rule 16b-3 under the Securities Exchange
Act of 1934 (the "Exchange Act"), and "outside directors," as defined by Section
162(m) under the Internal Revenue Code (the "Code"). Subject to the terms of the
2005 Plan,  the  Committee  has the power to determine  the key  associates  and
directors to whom awards are made, the nature and extent of any such awards, the
terms and conditions upon which awards may be made, exercised and modified,  and
to make all  other  determinations  and  take all  other  actions  necessary  or
advisable  for the  administration  of the  2005  Plan.  Repricing  of  options,
however, is not permitted under the 2005 Plan.

The maximum number of shares of Trustmark's  common stock available for issuance
under  the 2005  Plan is the sum of (1)  6,000,000  common  shares  plus (2) the
number of outstanding options under the 1997 Plan, which expire or are otherwise
terminated or forfeited  after May 10, 2005. The number of  outstanding  options
under the 1997 Plan on May 11, 2005 was 1,806,768,  making the maximum number of
shares issuable under the 2005 Plan (assuming 100% of outstanding  options under
the 1997 Plan are forfeited) 7,806,768.  The 2005 Plan does not limit the number
of shares that may be issued for any  particular  type of award,  except that in
any calendar year no individual may receive awards of stock options or SARs with
respect  to more  than  90,000  common  shares,  awards of  restricted  stock or
restricted  stock units with respect to more than 50,000 common shares or awards
of performance units providing for the cash payment of more than $1,000,000. The
maximum  number of shares  available for issuance under the 2005 Plan is subject
to adjustment  upon the occurrence of any stock dividend or other  distribution,
stock split, merger, consolidation, combination, share repurchase or exchange or
other similar transaction or event. Trustmark has filed a registration statement
on Form S-8 to register up to 6,090,301 shares for issuance under the 2005 Plan.

Awards granted under the 2005 Plan may or may not qualify as  "performance-based
compensation"  under  Section  162(m) of the Code.  In approving  the 2005 Plan,
shareholders  also  approved  the  performance  goals  which may be used and the
maximum  benefit  which may be paid to any  associate  for  purposes  of Section
162(m) of the Code. The performance  goals for Section 162(m)  performance-based
compensation  with  respect  to the 2005  Plan will be  determined  by the Human
Resources  Committee,  may be equal to,  less than or more than one year and may
not be the same for all participants, may relate to performance of a subsidiary,
division,  strategic  business  unit or line of  business or may be based on the
performance of Trustmark generally.
 
A more detailed  summary of the material  features of the 2005 Plan is set forth
in Trustmark's proxy statement for the 2005 Annual Meeting of Shareholders filed
with the Securities and Exchange Commission on April 8, 2005. The summary in the
proxy  statement  and the  description  of the 2005 Plan  contained  herein  are
qualified  in their  entirety  by  reference  to the full text of the 2005 Plan,
which was  attached  as Exhibit  10-a to  Trustmark's  Form 10-Q for the quarter
ended March 31, 2005.

Awards of Performance-Based Restricted Stock

Also on May 10, 2005, following shareholder approval of the 2005 Plan, the Human
Resources Committee approved grants of performance-based  restricted stock under
the 2005 Plan to the following named executive officers:

   Named Executive Officers      Number of Restricted Shares
   ------------------------      ---------------------------
   Richard G. Hickson                     17,423

   Gerard R. Host                          8,902

These  performance-based  awards are in the form of shares of  Trustmark  common
stock  ("Restricted   Shares")  which  are  restricted  and  held  by  Trustmark
contingent  on  meeting  certain  performance  goals  over the  eleven  calendar
quarters  beginning April 1, 2005 and ending December 31, 2007 (the "Performance
Period").   These   performance-based   awards  are   intended   to  qualify  as
"performance-based  compensation"  within the meaning of Internal  Revenue  Code
Section 162(m).

The  performance-based  awards are based on  performance  goals set by the Human
Resources  Committee  based on levels of  Trustmark's  return on average  equity
("ROAE")  and total  shareholder  return  ("TSR")  over the  Performance  Period
compared  to  ROAE  and  TSR  for a  group  of  publicly-traded  peer  financial
institutions  selected  by the Human  Resources  Committee  (the "Peer  Group").
"ROAE" means the cumulative  net earnings after taxes for the calendar  quarters
in each  calendar  year  in the  relevant  period  of time  divided  by  average
shareholder's  equity  (defined as the  difference  between the total assets and
total  liabilities,  averaged for the calendar quarters in each calendar year in
the  specified  period).  "TSR" means the return a holder of common  stock earns
over the  relevant  period of time,  expressed  as a  percentage  and  including
changes  in  market  value  of,  and  deemed   reinvested   dividends  or  other
distributions  with  respect  to, the stock and  converted  to an annual rate by
dividing the  calculated  percentage  for the specified  period by the number of
years and partial years  (expressed in quarters) in the  specified  period.  The
specified  period normally is the  Performance  Period.  However,  the specified
period  will be  reduced  in the case of the  officer's  death,  disability  (as
defined),  termination  by  Trustmark  without  cause  (as  defined),  voluntary
termination  by the officer for good reason (as defined) or the  occurrence of a
change in control (as defined) (a "Vesting Acceleration Event"). In the event of
a Vesting  Acceleration  Event  occurring  during the  Performance  Period,  the
performance  measurement period will be the calendar quarters in the Performance
Period  ending on or prior to the Vesting  Acceleration  Event,  and the maximum
Restricted  Shares  which  may vest  will be  prorated  based  on time  from the
beginning of the Performance Period to the Vesting Acceleration Event.

Vesting of the  Restricted  Shares is based on a matrix of possible  performance
levels with vesting equal to the number of the  Restricted  Shares  (prorated as
described above in the event of a Vesting  Acceleration Event) multiplied by the
sum of the vesting  percentage based on ROAE and the vesting percentage based on
TSR,  where the vesting  percentage  is determined  by  Trustmark's  performance
measured  against the Peer  Group.  The matrix  provides  for a range of vesting
percentages, from 0% up to and including 200%. If minimum levels of ROAE and TSR
performance  compared to the Peer Group are not achieved  during the Performance
Period,  none of the  Restricted  Shares will vest, and the entire award will be
forfeited (including any accumulated dividends on such Restricted Shares). Above
these  minimum  levels,  the  vesting  percentage  increases  based on  improved
performance  with  respect  to Peer  Group  ROAE and TSR.  The  Human  Resources
Committee will make and certify its determination with respect to vesting of the
Restricted  Shares  within 2 1/2  months  following  the end of the  Performance
Period or earlier vesting date.

In the event the  performance-based  vesting  provisions  result in greater than
100%  vesting of the  Restricted  Shares  other  than with  respect to a Vesting
Acceleration Event occurring before the last day of the Performance  Period, the
entire Restricted Shares will be vested and the Human Resources Committee make a
second grant of restricted stock ("Excess  Shares") in the first 2-1/2 months of
2008  equal  to the  number  of  Restricted  Shares  multiplied  by the  vesting
percentage in excess of 100%.  The Excess Shares will not be vested at grant but
will normally vest based on the officer's continued employment until the earlier
of Trustmark's  2010 annual meeting of shareholders or May 31, 2010 (the "Excess
Share  Regular  Vesting  Date").  The Excess Shares may also vest if the officer
remains employed until the occurrence of a Vesting  Acceleration Event occurring
on or after the end of the Performance Period and before the Excess Share
Regular Vesting Date.

In each case, the Restricted  Shares and any Excess Shares will be issued in the
name of the officer  bearing a legend  indicating that the shares are subject to
restrictions  until  the  Human  Resources   Committee  has  determined  if  the
performance-based  vesting  criteria and any service based vesting  requirements
have been met at the  conclusion of the  Performance  Period or the Excess Share
Regular Vesting Date, as applicable,  subject to earlier vesting in the event of
a Vesting Acceleration Event. During the period of restriction, the recipient is
entitled to full voting  rights with respect to the  Restricted  Shares and once
issued in 2008, any Excess Shares.  Dividends on the Restricted  Shares and once
issued in 2008, any Excess Shares will be withheld and  accumulated by Trustmark
and will  vest and be paid to the  officer  based on the same  restrictions  and
vesting of the Restricted Shares and Excess Shares, respectively,  to which they
relate.  If the officer ceases  employment for any other reason prior to the end
of the Performance Period, the Restricted Shares (and any accumulated  dividends
on such Restricted  Shares) are automatically  forfeited.  If the officer ceases
employment prior to the end of the Performance  Period, no Excess Shares will be
granted. If the officer ceases employment for any other reason prior to the 2010
Vesting Date,  the Excess Shares (and any  accumulated  dividends on such Excess
Shares) are automatically forfeited.

A form of the award  agreement to be entered into between  Trustmark and Messrs.
Hickson and Host,  respectively,  to reflect  the  Restricted  Shares  awards is
attached to this current  report as Exhibit 10-b and is  incorporated  herein by
reference.

Awards of Non-Qualified Stock Options

Also on May 10, 2005, following shareholder approval of the 2005 Plan, the Human
Resources  Committee  approved grants of  non-qualified  stock options under the
2005 Plan to the following  non-employee  directors and named executive officers
of Trustmark:

   Named Executive Officers           Number of Stock Options
   ------------------------           -----------------------
   Harry M. Walker                           15,000
   Duane A. Dewey                            15,000

   Non-Associate Directors            Number of Stock Options
   -----------------------            -----------------------
   J. Kelly Allgood                           2,000
   Reuben V. Anderson                         2,000
   William C. Deviney, Jr.                    2,000
   C. Gerald Garnett                          2,000
   Matthew L. Holleman III                    2,000
   John M. McCullouch                         2,000
   Richard H. Puckett                         2,000
   Carolyn C. Shanks                          2,000
   R. Michael Summerford                      2,000
   Kenneth W. Williams                        2,000
   William G. Yates, Jr.                      2,000

Each of the  non-qualified  stock options was granted with an exercise  price of
$28.28,  which was the fair market value of a share of Trustmark common stock on
May 10,  2005,  based on the  average of the high and low sales price on May 10,
2005 as reported by the Nasdaq National Market System.  Each option granted to a
named  executive  officer or a non-employee  director vests in five equal annual
installments beginning on May 10, 2006, but is subject to earlier vesting in the
event of a change in control of Trustmark  or, in the case of an option  granted
to a non-employee  director, the director's mandatory retirement at or after age
65. No  portion  of the grants  may be  exercised  prior to May 10,  2006 or any
earlier  vesting  due to a change in  control  of  Trustmark  or a  non-employee
director's mandatory retirement,  and to the extent unexercised the options will
expire on May 9, 2012 (seven year option  term).  The ability to exercise all or
any portion of the grant is  contingent  upon  continuation  as an  associate or
director, as applicable, of Trustmark or any subsidiary until one year preceding
the date of exercise or, in the case of an option  granted to a named  executive
officer who is terminated  for cause (as defined),  until 30 days  preceding the
date for exercise.

A form of the award  agreement  to be entered into  between  Trustmark  and each
non-employee  director  grant-recipient  to reflect  these awards is attached to
this current report as Exhibit 10-c and is incorporated  herein by reference.  A
form of the award  agreement  to be  entered  into  between  Trustmark  and each
associate  grant-recipient,  including the named executive officers,  to reflect
these  awards  is  attached  to this  current  report  as  Exhibit  10-d  and is
incorporated herein by reference.

Item 1.02 Termination of a Material Definitive Agreement

The 2005 Plan was  established to replace  Trustmark's  1997 Long Term Incentive
Plan (the "1997 Plan"),  which had 4,746,751  shares  remaining  available to be
granted in the form of stock option awards to key executives of Trustmark at May
10, 2005. Shareholder approval of the 2005 Plan also resulted in the termination
of the 1997 Plan,  effective May 10, 2005, such that no additional  stock option
awards will be granted  under the 1997 Plan.  Termination  of the 1997 Plan does
not  affect any  options  outstanding  under the 1997  Plan.  A copy of the plan
amendment  terminating  the 1997  Plan is  attached  to this  current  report as
Exhibit 10-e and is incorporated herein by reference.

Item 9.01 Financial Statements and Exhibits

(c) The following exhibits are filed as part of this Form 8-K:


Exhibit No.   Description
-----------   -----------
              
10-a          2005 Stock and Incentive Compensation Plan, approved May 10, 2005.
              Filed as Exhibit 10-a to Trustmark's Form 10-Q Quarterly Report
              for the quarter ended March 31, 2005, incorporated herein by
              reference.                                                        
                                                                                
10-b          Form of Restricted Stock Agreement (under the 2005 Stock and
              Incentive Compensation Plan)
                                                                                
10-c          Form of Non-Qualified Stock Option Agreement for Director (under
              the 2005 Stock and Incentive Compensation Plan)                   
                                                                                
10-d          Form of Non-Qualified Stock Option Agreement for Associate (under 
              the 2005 Stock and Incentive Compensation Plan)                   

10-e          Termination Amendment to the Second Amended Trustmark Corporation 
              1997 Long Term Incentive Plan



                                   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
                                                   (Registrant)

                                              By:  /s/ Louis E. Greer 
                                                   -------------------
                                                   Louis E. Greer
DATE:  May 16, 2005                                Chief Accounting Officer



                                  EXHIBIT INDEX

Exhibit No.   Description
-----------   -----------

10-a          2005 Stock and Incentive Compensation Plan, approved May 10, 2005.
              Filed as Exhibit 10-a to Trustmark's Form 10-Q Quarterly Report 
              for the quarter ended March 31, 2005, incorporated herein by
              reference.                                                        
                                                                                
10-b          Form of Restricted Stock Agreement (under the 2005 Stock and 
              Incentive Compensation Plan)
                                                                                
10-c          Form of Non-Qualified Stock Option Agreement for Director (under
              the 2005 Stock and Incentive Compensation Plan)                   
                                                                                
10-d          Form of Non-Qualified Stock Option Agreement for Associate (under
              the 2005 Stock and Incentive Compensation Plan)                   

10-e          Termination Amendment to the Second Amended Trustmark Corporation 
              1997 Long Term Incentive Plan