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

        DATE OF REPORT (DATE OF EARLIEST EVENT REPORTED): APRIL 14, 2005


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


           NEVADA                           1-7615               74-1884980
(State or other jurisdiction of    (Commission File Number)   (I.R.S. Employer
incorporation or organization)                               Identification No.)

        55 WAUGH DRIVE, SUITE 1000                                  77007
              HOUSTON, TEXAS                                      (Zip Code)
(Address of principal executive offices)


               REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE:
                                 (713) 435-1000


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))



Item 2.02.  Results of Operations and Financial Condition

     On  April  14,  2005, Kirby Corporation issued a press release revising its
earnings guidance for the three months ended March 31, 2005. A copy of the press
release is attached as Exhibit 99.1 to this report.


Item 9.01.  Financial Statements and Exhibits
       (c)  Exhibits:
            99.1  Press release dated April 14, 2005


                                   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  thereunto  duly  authorized.

                                   KIRBY CORPORATION
                                   (Registrant)

                                   By:     /s/ NORMAN W. NOLEN
                                      ----------------------------------------
                                               Norman W. Nolen
                                      Executive Vice President, Treasurer
                                         and Chief Financial Officer

Dated:  April 15, 2005



                                  EXHIBIT INDEX


Exhibit 99.1   Press release dated April 14, 2005