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 27, 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  27,  2005,  Kirby  Corporation  ("Kirby") issued a press release
announcing  earnings  for  the  three months ended March 31, 2005. A copy of the
press release is attached as Exhibit 99.1 to this report.

     EBITDA,  a non-GAAP financial measure, is used in the press release.  Kirby
defines  EBITDA  as  net  earnings  before  interest  expense,  taxes on income,
depreciation  and  amortization.  Kirby has historically evaluated its operating
performance  using  numerous  measures,  one  of  which  is  EBITDA.  EBITDA  is
presented  because  of  its wide acceptance as a financial indicator.  EBITDA is
one of the performance measures used in Kirby's incentive bonus plan.  EBITDA is
also  used  by  rating  agencies  in  determining  Kirby's  credit rating and by
analysts  publishing  research  reports  on  Kirby,  as well as by investors and
investment  bankers  generally  in  valuing  companies.  A  quantitative
reconciliation  of  EBITDA  to  GAAP  net  earnings  for the 2005 and 2004 first
quarters  is  included  in  the  press  release.


Item 9.01.     Financial Statements and Exhibits
          (c)  Exhibits:
               99.1  Press release dated April 27, 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 28, 2005



                                  EXHIBIT INDEX


Exhibit 99.1     Press release dated April 27, 2005