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): July 20, 2004


                            O'REILLY AUTOMOTIVE, INC.


             (Exact Name of Registrant as Specified in Its Charter)


         Missouri                                      44-0618012
--------------------------------------------------------------------------------
(State or Other Jurisdiction                  (IRS Employer Identification No.)
     of Incorporation)

                                233 S. Patterson
                           Springfield, Missouri 65802
--------------------------------------------------------------------------------
               (Address of Principal Executive Offices)(Zip Code)


                                  417-862-6708
--------------------------------------------------------------------------------
              (Registrant's Telephone Number, Including Area Code)


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


ITEM 9. REGULATION FD DISCLOSURE

     The press  release is attached  hereto as Exhibit 99.1 and is  incorporated
herein by reference.


                                    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.

Date:  July 20, 2004
                                     O'REILLY AUTOMOTIVE, INC.

                                     By:/s/ James R. Batten
                                     -------------------------------------------
                                     James R. Batten
                                     Executive Vice President of Finance
                                      Chief Financial Officer and Treasurer
                                      (principal financial officer)



                                  EXHIBIT INDEX

Exhibit
Number         Description
------         -----------------------------------------------------------------

 99.1          Press Release dated July 20, 2004





FOR IMMEDIATE RELEASE

For further information contact:                         David O'Reilly
                                                         James R. Batten
                                                         (417) 862-3333
________________________________________________________________________________

                     O'REILLY AUTOMOTIVE INC. ANNOUNCES 2004
               SECOND QUARTER EARNINGS RELEASE AND CONFERENCE CALL
________________________________________________________________________________

Springfield,  MO,  July 20, 2004 - O'Reilly  Automotive,  Inc.  (the  "Company")
(Nasdaq:  ORLY)  announced  the  release  date for second  quarter  earnings  as
Tuesday,  July 27, 2004,  with a conference call to follow  Wednesday,  July 28,
2004.

The Company's  second quarter  earnings will be released after 5:30 p.m. central
time on  Tuesday,  July  27,  2004,  and can be  viewed,  at that  time,  on the
Company's website at www.oreillyauto.com by clicking on "News".

Investors are invited to listen to the webcast of the Company's  conference call
discussing  the financial  results for the second quarter of 2004, on Wednesday,
July 28,  2004,  after  11:00  a.m.  central  time on the  company's  website at
www.oreillyauto.com by clicking on "News".

O'Reilly  Automotive,  Inc.  is  one  of  the  largest  specialty  retailers  of
automotive aftermarket parts, tools, supplies,  equipment and accessories in the
United  States,  serving  both the  do-it-yourself  and  professional  installer
markets.  Founded in 1957 by the O'Reilly  family,  the Company  operated  1,132
stores  within the states of  Alabama,  Arkansas,  Florida,  Georgia,  Illinois,
Indiana, Iowa, Kansas, Kentucky,  Louisiana,  Mississippi,  Missouri,  Nebraska,
North Carolina, Oklahoma, Tennessee, Texas and Virginia as of March 31, 2004.