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):
                                  July 16, 2003

                       ----------------------------------

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



      Arizona                         000-24946                 86-0649974
(State or other jurisdiction   (Commission File Number)     (I.R.S. Employer
     of incorporation)                                      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)






<PAGE>

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.  CHANGES IN REGISTRANT'S CERTIFYING ACCOUNTANT

         Not applicable.

ITEM 5.  OTHER EVENTS AND REGULATION FD DISCLOSURE

         Not applicable.

ITEM 6.  RESIGNATIONS OF REGISTRANT'S DIRECTORS

         Not applicable.

ITEM 7.  FINANCIAL STATEMENTS AND EXHIBITS

     (c) Exhibits.

      EXHIBIT
      NUMBER        EXHIBIT TITLE
------------------------------------------------------------------------------

      99.1          Knight Transportation, Inc. press release announcing
                    financial results for the quarter and six months ended
                    June 30, 2003

ITEM 8.  CHANGE IN FISCAL YEAR

         Not applicable.

ITEM 9.  REGULATION FD DISCLOSURE

     The   following   information   regarding   the  press  release  of  Knight
Transportation,  Inc. (the "Company")  announcing its financial  results for the
quarter and six months  ended June 30, 2003 is  intended to be  furnished  under
Item 12,  "Results of Operations and Financial  Condition," but is instead being
furnished  pursuant to Item 9 in accordance with the interim guidance  contained
in Securities Exchange Commission Release No. 33-8216. The information contained
in this report and the exhibit  hereto shall not be deemed  "filed" for purposes
of Section 18 of the Securities  Exchange Act of 1934, as amended (the "Exchange
Act"),  or  incorporated  by reference in any filing under the Securities Act of
1933, as amended, or the Exchange Act, except as shall be expressly set forth by
specific reference in such a filing.

     On July 16, 2003, the Company  issued a press release (the "Earnings  Press
Release")  announcing its financial results for the quarter and six months ended
June 30, 2003. A copy of the Earnings  Press  Release is attached to this report
as Exhibit 99.1.

     The  information  in  this  report  and  the  exhibit  hereto  may  contain
"forward-looking   statements"   that  are  made  pursuant  to  the  safe-harbor
provisions of the Private Securities Litigation Reform Act of 1995 and otherwise
may be  protected.  Such  statements  are made based on the current  beliefs and
expectations  of the Company's  management and are subject to significant  risks
and  uncertainties.   Actual  results  may  differ  from  those  anticipated  by
forward-looking statements.  Please refer to the Company's Annual Report on Form
10-K  and  other  filings  with  the  Securities  and  Exchange  Commission  for
information  concerning  risks,  uncertainties and other factors that may affect
future results.



<PAGE>
                                    SIGNATURE

     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.


Date:  July 16, 2003           /s/ Timothy M. Kohl
                             ---------------------------------------
                             Timothy M. Kohl
                             Executive Vice President, Secretary, and
                             Chief Financial Officer


<PAGE>


                                  EXHIBIT INDEX

    99.1       Knight  Transportation, Inc. press release announcing financial
               results for the quarter and six months ended June 30, 2003
[{"type": "8-K", "sequence": "1", "filename": "kngtform8k.txt", "description": "KNIGHT TRANSPORTATION FORM 8-K JULY 16, 2003", "secsgml_size_bytes": 4852}]
{"company-data": {"conformed-name": "KNIGHT TRANSPORTATION INC", "cik": "0000929452", "assigned-sic": "4213", "irs-number": "860649974", "state-of-incorporation": "AZ", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-24946", "film-number": "03790044"}, "business-address": {"street1": "5601 W BUCKEYE RD", "city": "PHOENIX", "state": "AZ", "zip": "85043", "phone": "6022692000"}, "mail-address": {"street1": "5601 W BUCKEYE RD", "city": "PHOENIX", "state": "AZ", "zip": "85043"}}
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):
                                  July 16, 2003

                       ----------------------------------

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

      Arizona                         000-24946                 86-0649974
(State or other jurisdiction   (Commission File Number)     (I.R.S. Employer
     of incorporation)                                      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.  CHANGES IN REGISTRANT'S CERTIFYING ACCOUNTANT

         Not applicable.

ITEM 5.  OTHER EVENTS AND REGULATION FD DISCLOSURE

         Not applicable.

ITEM 6.  RESIGNATIONS OF REGISTRANT'S DIRECTORS

         Not applicable.

ITEM 7.  FINANCIAL STATEMENTS AND EXHIBITS

     (c) Exhibits.

      EXHIBIT
      NUMBER        EXHIBIT TITLE
------------------------------------------------------------------------------

      99.1          Knight Transportation, Inc. press release announcing
                    financial results for the quarter and six months ended
                    June 30, 2003

ITEM 8.  CHANGE IN FISCAL YEAR

         Not applicable.

ITEM 9.  REGULATION FD DISCLOSURE

     The   following   information   regarding   the  press  release  of  Knight
Transportation,  Inc. (the "Company")  announcing its financial  results for the
quarter and six months  ended June 30, 2003 is  intended to be  furnished  under
Item 12,  "Results of Operations and Financial  Condition," but is instead being
furnished  pursuant to Item 9 in accordance with the interim guidance  contained
in Securities Exchange Commission Release No. 33-8216. The information contained
in this report and the exhibit  hereto shall not be deemed  "filed" for purposes
of Section 18 of the Securities  Exchange Act of 1934, as amended (the "Exchange
Act"),  or  incorporated  by reference in any filing under the Securities Act of
1933, as amended, or the Exchange Act, except as shall be expressly set forth by
specific reference in such a filing.

     On July 16, 2003, the Company  issued a press release (the "Earnings  Press
Release")  announcing its financial results for the quarter and six months ended
June 30, 2003. A copy of the Earnings  Press  Release is attached to this report
as Exhibit 99.1.

     The  information  in  this  report  and  the  exhibit  hereto  may  contain
"forward-looking   statements"   that  are  made  pursuant  to  the  safe-harbor
provisions of the Private Securities Litigation Reform Act of 1995 and otherwise
may be  protected.  Such  statements  are made based on the current  beliefs and
expectations  of the Company's  management and are subject to significant  risks
and  uncertainties.   Actual  results  may  differ  from  those  anticipated  by
forward-looking statements.  Please refer to the Company's Annual Report on Form
10-K  and  other  filings  with  the  Securities  and  Exchange  Commission  for
information  concerning  risks,  uncertainties and other factors that may affect
future results.
SIGNATURE

     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.

Date:  July 16, 2003           /s/ Timothy M. Kohl
                             ---------------------------------------
                             Timothy M. Kohl
                             Executive Vice President, Secretary, and
                             Chief Financial Officer
EXHIBIT INDEX

    99.1       Knight  Transportation, Inc. press release announcing financial
               results for the quarter and six months ended June 30, 2003