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):
                                January 21, 2004



                           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
                               twelve months ended December 31, 2003

Item 8.           Change in Fiscal Year.

                  Not applicable.

Item 9.           Regulation FD Disclosure.

                  Not applicable.

Item 10.          Amendments to the Registrant's Code of Ethics, or Waiver of a
                  Provision of the Code of Ethics.

                  Not applicable.

<PAGE>
Item 11.          Temporary Suspension of Trading Under Registrant's Employee
                  Benefit Plans.

                  Not applicable.

Item 12.          Results of Operations and Financial Condition.

     On Wednesday,  January 21, 2004,  Knight  Transportation,  Inc., an Arizona
corporation  (the  "Company"),  issued a press  release  (the  "Press  Release")
announcing  its  financial  results  for the  quarter  and twelve  months  ended
December  31,  2003.  A copy of the Press  Release is attached to this report as
Exhibit 99.1.

     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.

     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 or events 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: January 22, 2004                      /s/ Timothy M. Kohl
                                            ---------------------------
                                            Timothy M. Kohl
                                            President


<PAGE>


                                  EXHIBIT INDEX

99.1    Knight  Transportation, Inc. press release  announcing  financial
        results for the quarter and twelve months ended December 31, 2003
[{"type": "8-K", "sequence": "1", "filename": "knight8kjan2204.txt", "description": "KNIGHT FORM 8-K JAN 22 2004", "secsgml_size_bytes": 5001}]
{"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": "04537699"}, "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"}}
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):
                                January 21, 2004

                           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
                               twelve months ended December 31, 2003

Item 8.           Change in Fiscal Year.

                  Not applicable.

Item 9.           Regulation FD Disclosure.

                  Not applicable.

Item 10.          Amendments to the Registrant's Code of Ethics, or Waiver of a
                  Provision of the Code of Ethics.

                  Not applicable.
Item 11.          Temporary Suspension of Trading Under Registrant's Employee
                  Benefit Plans.

                  Not applicable.

Item 12.          Results of Operations and Financial Condition.

     On Wednesday,  January 21, 2004,  Knight  Transportation,  Inc., an Arizona
corporation  (the  "Company"),  issued a press  release  (the  "Press  Release")
announcing  its  financial  results  for the  quarter  and twelve  months  ended
December  31,  2003.  A copy of the Press  Release is attached to this report as
Exhibit 99.1.

     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.

     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 or events 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: January 22, 2004                      /s/ Timothy M. Kohl
                                            ---------------------------
                                            Timothy M. Kohl
                                            President
EXHIBIT INDEX

99.1    Knight  Transportation, Inc. press release  announcing  financial
        results for the quarter and twelve months ended December 31, 2003