================================================================================
                                  UNITED STATES

                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549
================================================================================




                                    FORM 11-K

                 ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934


    [X]              ANNUAL REPORT PURSUANT TO SECTION 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
                   FOR THE FISCAL YEAR ENDED DECEMBER 31, 2002
                                       OR
    [ ]            TRANSITION REPORT PURSUANT TO SECTION 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
                 FOR THE TRANSITION PERIOD FROM        TO
                                                ------    ------
                          COMMISSION FILE NUMBER 1-7615






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                                KIRBY 401(k) PLAN

================================================================================

                                Kirby Corporation
                           55 Waugh Drive, Suite 1000
                              Houston, Texas 77007








                                KIRBY 401(k) PLAN

                 Financial Statements and Supplemental Schedule

                           December 31, 2002 and 2001

                   (With Independent Auditors' Report Thereon)







                                KIRBY 401(k) PLAN



                   INDEX TO FINANCIAL STATEMENTS AND SCHEDULE




<Table>
<Caption>
                                                                                                                   PAGE
                                                                                                                
Independent Auditors' Report                                                                                          1

Statements of Net Assets Available for Benefits (Modified Cash Basis) - December 31, 2002 and
     2001                                                                                                             2

Statements of Changes in Net Assets Available for Benefits (Modified Cash Basis) - Years ended
     December 31, 2002 and 2001                                                                                       3

Notes to Financial Statements (Modified Cash Basis)                                                               4 - 9

SUPPLEMENTAL SCHEDULE

Schedule H, Line 4i - Schedule of Assets (Held at End of Year) (Modified Cash Basis) - as of
     December 31, 2002                                                                                               10
</Table>


Schedules, other than those listed above, are omitted because of the absence of
the conditions under which they are required.




                          INDEPENDENT AUDITORS' REPORT



Plan Administrator
Kirby 401(k) Plan:


We have audited the accompanying statements of net assets available for benefits
(modified cash basis) of the Kirby 401(k) Plan (the Plan) as of December 31,
2002 and 2001 and the related statements of changes in net assets available for
benefits (modified cash basis) for the years ended December 31, 2002 and 2001.
These financial statements are the responsibility of the Plan's management. Our
responsibility is to express an opinion on these financial statements based on
our audits.

We conducted our audits in accordance with auditing standards generally accepted
in the United States of America. Those standards require that we plan and
perform the audit to obtain reasonable assurance about whether the financial
statements are free of material misstatement. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements. An audit also includes assessing the accounting principles used and
significant estimates made by management, as well as evaluating the overall
financial statement presentation. We believe that our audits provide a
reasonable basis for our opinion.

As described in note 2, these financial statements and supplemental schedule
were prepared on a modified cash basis of accounting, which is a comprehensive
basis of accounting other than generally accepted accounting principles.

In our opinion, the financial statements referred to above present fairly, in
all material respects, the net assets available for benefits of the Plan as of
December 31, 2002 and 2001 and the changes in net assets available for benefits
for the years ended December 31, 2002 and 2001 on the basis of accounting
described in note 2.

Our audits were made for the purpose of forming an opinion on the basic
financial statements taken as a whole. The supplemental schedule H, line 4i -
schedule of assets (held at end of year) (modified cash basis) as of December
31, 2002 is presented for the purpose of additional analysis and is not a
required part of the basic financial statements but is supplementary information
required by the Department of Labor's Rules and Regulations for Reporting and
Disclosure under the Employee Retirement Income Security Act of 1974. The
supplemental schedule is the responsibility of the Plan's management. The
supplemental schedule has been subjected to the auditing procedures applied in
the audits of the basic financial statements and, in our opinion, is fairly
stated, in all material respects, in relation to the basic financial statements
taken as a whole.






Houston, Texas
June 30, 2003




                                KIRBY 401(k) PLAN

                Statements of Net Assets Available for Benefits

                              (Modified Cash Basis)

                           December 31, 2002 and 2001


<Table>
<Caption>
                                                          2002             2001
                                                       -----------     -----------
                                                                 
Assets:
     Investments at fair value                         $44,817,740      45,501,245
     Accrued income                                            190              --
     Due from broker for securities sold                     4,818              --
                                                       -----------     -----------
                 Total assets                           44,822,748      45,501,245

Liabilities:
     Due to broker for securities purchased                 42,678          47,914
                                                       -----------     -----------
                 Net assets available for benefits     $44,780,070      45,453,331
                                                       ===========     ===========
</Table>


See accompanying notes to financial statements


                                       2

                                KIRBY 401(K) PLAN

           Statements of Changes in Net Assets Available for Benefits

                              (Modified Cash Basis)

                     Years ended December 31, 2002 and 2001

<Table>
<Caption>

                                                             2002              2001
                                                         ------------      ------------
                                                                        
Additions to net assets attributed to:
     Contributions from participants                     $  5,084,308         5,250,825
     Contributions from employer                            1,977,665         2,115,161
     Rollover contributions                                   441,729           611,633
     Interest and dividend income                             664,400           706,714
                                                         ------------      ------------
                 Total additions                            8,168,102         8,684,333
                                                         ------------      ------------
Deductions from net assets attributed to:

     Benefits paid to participants                          3,828,409         4,110,371
     Net depreciation in fair value of investments          5,012,954         3,609,040
                                                         ------------      ------------
                 Total deductions                           8,841,363         7,719,411
                                                         ------------      ------------
                 Net increase (decrease)                     (673,261)          964,922
Net assets available for benefits, beginning of year       45,453,331        44,488,409
                                                         ------------      ------------
Net assets available for benefits, end of year           $ 44,780,070        45,453,331
                                                         ============      ============
</Table>


See accompanying notes to financial statements.

                                        3


                                KIRBY 401(k) PLAN

                          Notes to Financial Statements

                              (Modified Cash Basis)

                           December 31, 2002 and 2001


(1)    DESCRIPTION OF THE PLAN

       (a)    GENERAL

              The Kirby 401(k) Plan (the Plan) is a defined contribution 401(k)
              plan for the benefit of employees of Kirby Corporation (the
              Company) and certain subsidiaries. Each employee is eligible to
              join the Plan as of the first pay period following completion of
              one year of service and the attainment of age 18. Employees
              covered by collective bargaining agreements, the terms of which do
              not provide for participation in the Plan, are not eligible. The
              Plan is subject to the provisions of the Employee Retirement
              Income Security Act of 1974, as amended (ERISA). Further
              information relating to the Plan's provisions is available in the
              Plan Document.

              The Hollywood Marine, Inc. (HMI) 401(k) Plan (HMI Plan) was merged
              into the Plan, and all HMI balances were transferred to the Plan
              effective December 31, 1999. Commencing January 1, 2000, former
              HMI Plan participants are subject to the same plan provisions as
              the Kirby 401(k) Plan participants. In connection with the plan
              merger, the Plan was amended on December 31, 1999 to include HMI
              employees.

       (b)    PLAN ADMINISTRATION

              The general administration of the Plan is the responsibility of
              the Company (the Plan Administrator). The Plan Administrator has
              broad powers regarding the operation and administration of the
              Plan and receives no compensation for service to the Plan. All
              administrative expenses, unless paid by the Company at its
              discretion, are paid by the Plan. Wells Fargo Bank (Wells) is the
              trustee of the Plan.

       (c)    CONTRIBUTIONS

              The Plan provides for basic employee pretax contributions to the
              Plan of 3% of covered compensation as defined, and for additional
              employee pretax contributions to the Plan of up to 14% of covered
              compensation subject to the provisions of the Internal Revenue
              Code (the Code). Participants age 50 or older during the Plan year
              may also elect to make a "catch-up" contribution, subject to
              certain Internal Revenue Service (IRS) limits ($1,000 in 2002).
              The Company contributes matching employer contributions equal to
              100% of basic employee pretax contributions. The Company does not
              match the additional employee pretax contributions.

       (d)    BENEFITS PAYMENTS AND LOANS

              Benefits payments are made in a lump-sum distribution to the
              participant upon termination of employment (or to the beneficiary
              in the event of death). However, a participant may request a loan
              for up to the lesser of 50% of the participant's vested interest
              or $50,000, less the participant's highest outstanding loan
              balance during the preceding 12 months. Loans are typically repaid
              over a five-year period. Loans outstanding upon a participant's
              termination of employment are considered deemed distributions if
              not repaid and are deducted from the participant's account balance
              prior to distribution. These amounts are taxed to the participant
              in the year of the participant's termination.


                                       4                            (Continued)


                                KIRBY 401(k) PLAN

                          Notes to Financial Statements

                              (Modified Cash Basis)

                           December 31, 2002 and 2001


       (e)    VESTING

              Participants are 100% vested in their participant contributions
              and rollovers, if any. A participant in the Kirby 401(k) Plan,
              excluding former HMI Plan participants, has an immediate and fully
              vested interest in the portion of the account relating to employer
              contributions and may, upon resignation from or discharge by the
              employer, withdraw their entire account balance.

              Employer contributions made to the prior HMI Plan are subject to a
              five-year vesting schedule based on the participant's HMI service
              date. Forfeitures of nonvested participants are credited to the
              accounts of former HMI Plan participants employed at year-end
              based on a formula that considers the total compensation, as
              defined, of all former HMI Plan participants for that plan year.

              Commencing January 1, 2000, employer contributions to former HMI
              Plan participants are subject to the same vesting as Kirby
              participants.

       (f)    PLAN TERMINATION

              Although it has not expressed any intent to do so, the Company has
              the right under the Plan to terminate the Plan subject to the
              provisions of ERISA. In the event of termination, the amounts
              credited to the accounts of participants shall vest immediately
              and will be distributed to the participants after payment of
              expenses for distribution and liquidation.

       (g)    VALUATION OF PARTICIPANT ACCOUNTS

              Under the Plan, each participant's account is credited with the
              participant's contribution, the Company's matching contribution
              and an allocation of investment income (loss), net of
              administrative expenses. Investment income (loss) are allocated
              daily to participants. The benefit to which a participant is
              entitled is the benefit that can be provided from the
              participant's vested account.

(2)    SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

       (a)    BASIS OF PRESENTATION

              The accompanying financial statements have been prepared on the
              modified cash basis, which is a comprehensive basis of accounting
              other than generally accepted accounting principles, and is an
              acceptable method of reporting under Department of Labor
              regulations. The modified cash basis of accounting utilizes the
              cash basis of accounting while carrying investments at fair value
              and recording investment income on the accrual basis.
              Consequently, contributions are recognized when received rather
              than when earned, and expenses are recognized when paid rather
              than when the obligation is incurred. As of December 31, 2002,
              $174,340 of employee contributions and $73,549 of employer
              contributions for the 2002 Plan year had not been remitted to the
              trust. As of December 31, 2001, $174,947 of employee contributions
              and $72,791 of employer contributions for the 2001 Plan year had
              not been remitted to the trust. Under generally accepted
              accounting principles, these amounts would have been reflected as
              accounts receivable.


                                       5                            (Continued)


                                KIRBY 401(k) PLAN

                          Notes to Financial Statements

                              (Modified Cash Basis)

                           December 31, 2002 and 2001


       (b)    RECLASSIFICATION

              Certain prior year amounts have been reclassified to conform with
              the current year presentation.

       (c)    USE OF ESTIMATES

              The preparation of financial statements requires Plan management
              to make estimates and assumptions that affect the reported amounts
              of assets and disclosure of contingent assets and liabilities, and
              changes therein. Actual results could differ from those estimates.

       (d)    INVESTMENT VALUATION

              Investments in mutual funds and Kirby Corporation common stock are
              stated at fair value based on quoted market prices. Investments in
              common trust funds are stated at fair market value based upon
              quoted market prices of the underlying assets. Purchases and sales
              of investments are recorded on a trade date basis. Net
              appreciation (depreciation) in fair value of investments includes
              realized gains and losses on investments sold during the year as
              well as net appreciation (depreciation) of the investments held at
              the end of the year. Participant loans are stated at cost, which
              approximates their fair value. Interest and dividend income is
              accrued in the period earned.

(3)    INVESTMENTS

       Each participant has the right to direct his or her contributions and the
       Company's matching contributions, between the investment funds offered by
       the Plan. Descriptions of the Plan's investment fund options are included
       in the summary plan description provided to all eligible employees.

       Effective February 1, 2001, in connection with the change in trustee from
       Chase Bank of Texas (Chase) to Wells, all of the Plan's assets managed by
       Chase were transferred to the following common stock and mutual funds
       managed by Wells: Wells Fargo Outlook 2010 Fund, Wells Fargo Outlook 2020
       Fund, Wells Fargo Outlook 2030 Fund, Wells Fargo Outlook 2040 Fund, Wells
       Fargo Treasury Plus Institutional Money Market Fund, Dreyfus Intermediate
       Term Income Fund, Wells Fargo Asset Allocation Fund, MFS Value Fund,
       Goldman Sachs Capital Growth Fund, Wells Fargo S&P 500 Index Fund, MFS
       Massachusetts Investors Growth Stock Fund, MFS Mid-Cap Growth Fund, AIM
       Aggressive Growth Fund, Janus Advisor International Fund and Kirby Common
       Stock Fund.

       The following presents investments that represent 5% or more of the
       Plan's net assets as of December 31:

<Table>
<Caption>
                                                               
2002:
    Wells Fargo Treasury Plus Institutional Money Market Fund     $9,880,671
    Wells Fargo Asset Allocation Fund                              4,474,236
    Dreyfus Intermediate Term Income Fund                          4,231,800
    Goldman Sachs Capital Growth Fund                              3,733,132
    AIM Aggressive Growth Fund                                     3,094,464
    Kirby Corporation common stock                                 8,019,381
    Participant loans                                              4,421,960
</Table>


                                       6                            (Continued)


                                KIRBY 401(k) PLAN

                          Notes to Financial Statements

                              (Modified Cash Basis)

                           December 31, 2002 and 2001


<Table>
<Caption>
                                                               
2001:
    Wells Fargo Treasury Plus Institutional Money Market Fund     $9,011,179
    Wells Fargo Asset Allocation Fund                              5,360,211
    Dreyfus Intermediate Term Income Fund                          3,605,727
    Goldman Sachs Capital Growth Fund                              5,262,474
    AIM Aggressive Growth Fund                                     4,043,158
    Kirby Corporation common stock                                 6,361,910
    MFS Massachusetts Investors Growth Stock Fund                  3,106,021
    Participant loans                                              4,032,460
</Table>


       The Plan's investments (including realized gains and losses on
       investments bought and sold, as well as unrealized losses on investments
       held during the year) depreciated in value by as follows:

<Table>
<Caption>
                                                2002             2001
                                             -----------      -----------
                                                        
                      Common trust funds     $(1,008,323)     $  (830,392)
                      Mutual funds            (4,115,830)      (4,146,103)
                      Common stock               111,199        1,367,455
                                             -----------      -----------

                                             $(5,012,954)     $(3,609,040)
                                             ===========      ===========
</Table>


(4)    VOTING RIGHTS

       Each shareholder is entitled to exercise voting rights attributable to
       the shares of Kirby Corporation common stock allocated to his or her
       account and is notified by the trustee prior to the time that such rights
       are to be exercised. The trustee is not permitted to vote any shares for
       which instructions have not been given by the participant. During 2002
       and 2001, the Plan purchased all shares of Kirby Corporation common stock
       in the open market.

(5)    RISK AND UNCERTAINTIES

       The Plan may invest in common trust funds, mutual funds and Company
       common stock. Investment securities are exposed to various risks, such as
       interest rate, market, and credit risks. Due to the level of risk
       associated with certain investment securities, it is probable that
       changes in the value of investment securities will occur in the near
       term.

(6)    RELATED PARTY TRANSACTIONS

       Certain Plan investment options include shares of Kirby Corporation
       common stock and common trust funds and mutual funds managed by Wells.
       Kirby is the plan sponsor, and Wells is the trustee as defined by the
       Plan. Chase is the former trustee of the Plan. Therefore, these
       transactions qualify as exempt party-in-interest transactions.

       The Plan has participant loans outstanding, which are secured solely by a
       portion of the participant's vested account balance, in accordance with
       the Plan Document.


                                       7                            (Continued)


                                KIRBY 401(k) PLAN

                          Notes to Financial Statements

                              (Modified Cash Basis)

                           December 31, 2002 and 2001


(7)    FEDERAL INCOME TAXES

       The Plan obtained its latest determination letter on December 30, 1996 in
       which the IRS stated that the Plan, as then designed, was in compliance
       with the applicable requirements of the Code. The Plan has been amended
       since receiving this determination letter. However, the Plan
       Administrator believes the Plan is currently designed and operated in
       compliance with the applicable requirements of the Code. Therefore, the
       Plan Administrator believes the Plan was qualified and the related trust
       was tax exempt as of December 31, 2002 and 2001.


                                       8                            (Continued)


                                KIRBY 401(k) PLAN

                          Notes to Financial Statements

                              (Modified Cash Basis)

                           December 31, 2002 and 2001


(8)    RECONCILIATION OF FINANCIAL STATEMENTS TO FORM 5500

       The following is a reconciliation of benefits paid to participants per
       the financial statements to the Form 5500:

<Table>
<Caption>
                                                                      DECEMBER 31
                                                               -------------------------
                                                                  2002           2001
                                                               ----------     ----------
                                                                         
Benefits paid to participants per the financial statements     $3,828,409      4,110,371
    Add amounts allocated to withdrawing participants at
      December 31 (current year)                                       --             --
    Less amounts allocated to withdrawing participants at
      December 31 (prior year)                                         --           (215)
                                                               ----------     ----------

              Benefits paid to participants per Form 5500      $3,828,409      4,110,156
                                                               ==========     ==========
</Table>


       Amounts allocated to withdrawing participants are recorded on the Form
       5500 for benefit claims that have been processed and approved for payment
       prior to December 31, but not yet paid as of that date.


                                       9

                                KIRBY 401(K) PLAN

         Schedule H, Line 4i - Schedule of Assets (Held at End of Year)

                              (Modified Cash Basis)

                                December 31, 2002

<Table>
<Caption>

          IDENTITY OF ISSUE,
         BORROWER, LESSOR, OR                                                                                  CURRENT
            SIMILAR PARTY                                     DESCRIPTION OF ASSET                              VALUE
- ---------------------------------------   -------------------------------------------------------------   --------------
                                                                                                    
Common trust funds:
    *Wells Fargo Bank                     Wells Fargo Treasury Plus Institutional
                                             Money Market Fund                                            $    9,880,671
    *Wells Fargo Bank                     Wells Fargo Short-Term Investment

                                             Money Market Fund                                                   148,745
    *Wells Fargo Bank                     Wells Fargo Asset Allocation Fund                                    4,474,236
    *Wells Fargo Bank                     Wells Fargo S&P 500 Index Fund                                       1,282,290
                                                                                                          --------------
                Total common trust funds                                                                      15,785,942
                                                                                                          --------------
Mutual funds:
    *Wells Fargo Bank                     Wells Fargo Outlook 2010 Fund                                          346,044
    *Wells Fargo Bank                     Wells Fargo Outlook 2020 Fund                                          432,708
    *Wells Fargo Bank                     Wells Fargo Outlook 2030 Fund                                           98,908
    *Wells Fargo Bank                     Wells Fargo Outlook 2040 Fund                                          120,553
    Dreyfus                               Dreyfus Intermediate Term Income Fund                                4,231,800
    The Goldman Sachs Group               Goldman Sachs Capital Growth Fund                                    3,733,132
    MFS Investment Management             MFS Value Fund                                                         760,058
    MFS Investment Management             MFS Massachusetts Investors Growth Stock Fund                        2,005,303
    MFS Investment Management             MFS Mid-Cap Growth Fund                                                420,692
    AIM Investments                       AIM Aggressive Growth Fund                                           3,094,464
    Janus                                 Janus Advisor International Fund                                     1,346,795
                                                                                                          --------------
                Total mutual funds                                                                            16,590,457
                                                                                                          --------------
Common stock:
    *Kirby Corporation                    Common stock                                                         8,019,381
                                                                                                          --------------

*Participant loans                        Interest rates ranging from 5.25% to 10.5%                           4,421,960
                                                                                                          --------------

                                          Total assets (held at end of year)                              $   44,817,740
                                                                                                          ==============
</Table>



*Parties in interest to the Plan.

See accompanying independent auditors' report.


                                       10


                                   SIGNATURES



         Pursuant to the requirements of the Securities Exchange Act of 1934,
the Plan Administrator, which administers the Plan, has duly caused this annual
report to be signed on its behalf by the undersigned hereunto duly authorized.


DATE: June 30, 2003                            KIRBY 401(k) PLAN

                                               KIRBY CORPORATION
                                               PLAN ADMINISTRATOR

                                               BY:   /s/ Jack M. Sims
                                                   -----------------------------
                                                         Jack M. Sims
                                                         Vice President
                                                         Human Resources
                                                         of Kirby Corporation




                                INDEX TO EXHIBIT


<Table>
<Caption>
                  EXHIBIT NUMBER                          DESCRIPTION
                  --------------                          -----------
                                                       
                       23.1                               Independent Auditors' Consent
</Table>