FORM 8-K


                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                 CURRENT REPORT


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


Date of Report (Date of earliest event reported) February 6, 2003


                           KNIGHT TRANSPORTATION, INC.
             (Exact name or registrant as specified in its charter)


           Arizona                     000-24946                  86-0649974
(State or other jurisdiction          (Commission               (IRS Employer
      of incorporation)               File Number)           Identification No.)


                  5601 W. Buckeye Road, Phoenix, Arizona 85043
               (Address of Principal Executive Offices) (Zip Code)


Registrant's telephone number, including area code (602) 269-2000


                                 Not Applicable
          -------------------------------------------------------------
          (Former name or former address, if changed since last report)

ITEM 1. CHANGES IN CONTROL OF REGISTRANT.

     Not applicable.

ITEM 2. ACQUISITION OR DISPOSITION OF ASSETS.

     Not applicable.

ITEM 3. BANKRUPTCY OR RECEIVERSHIP.

     Not applicable.

ITEM 4. CHANGE IN REGISTRANT'S CERTIFYING ACCOUNTANT.

     Not applicable.

ITEM 5. OTHER EVENTS.

     On  February  6, 2003,  the Board of  Directors  ( the  "Board")  of Knight
Transportation,  Inc.,  an  Arizona  corporation  (the  "Company"),  adopted  an
amendment to the Company's bylaws,  effective for calendar years beginning after
December  31,  2002,  providing  that the Board  may set the date of the  annual
meeting of shareholders on any date in the month of May, on such day and time as
the Board determines to be appropriate.  Prior to this amendment,  the Company's
annual meeting was to be held annually on the second Wednesday of May. A copy of
the amended Bylaw is attached as Exhibit 99.1 hereto.

     The Board has set May 21, 2003, as the date for the  Company's  2003 Annual
Meeting of Shareholders.

ITEM 6.  RESIGNATION OF REGISTRANT'S DIRECTORS.

                  Not applicable.

ITEM 7.  FINANCIAL STATEMENTS, PROFORMA FINANCIAL INFORMATION AND EXHIBITS.

     Exhibits.

     99.1     Amended Section 2.1 of the Company's Amended and Restated Bylaws.

ITEM 8. CHANGE IN FISCAL YEAR.

     Not applicable.

ITEM 9. REGULATION FD DISCLOSURE.

     Not applicable.

                                   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.

                                       KNIGHT TRANSPORTATION, INC.


Dated: February 6, 2003                /s/ Timothy M. Kohl
                                       -----------------------------------------
                                       Timothy M. Kohl
                                       Executive Vice-President, Secretary, and
                                       Chief Financial Officer