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): May 9, 2006




                        Pioneer Natural Resources Company
             ------------------------------------------------------
             (Exact name of Registrant as specified in its charter)



           Delaware                    1-13245                 75-2702753
----------------------------         ------------         -------------------
(State or other jurisdiction         (Commission           (I.R.S. Employer
      of incorporation)              File Number)         Identification No.)



5205 N. O'Connor Blvd., Suite 900, Irving, Texas                 75039
------------------------------------------------              ----------
   (Address of principal executive offices)                   (Zip Code)


                                 (972) 444-9001
              ----------------------------------------------------
              (Registrant's telephone number, including area code)



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


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))








                        PIONEER NATURAL RESOURCES COMPANY

                                TABLE OF CONTENTS


                                                                       Page

Item 2.02.  Results of Operations and Financial Condition............    3

Item 9.01.  Financial Statements and Exhibits

            (d)  Exhibits............................................    3

Signature............................................................    4

Exhibit Index........................................................    5






                                       2






                        PIONEER NATURAL RESOURCES COMPANY


Item 2.02.   Results of Operations and Financial Condition

     The information in this document includes  forward-looking  statements that
are made  pursuant  to the Safe  Harbor  Provisions  of the  Private  Securities
Litigation  Reform  Act of 1995.  Forward-looking  statements  and the  business
prospects of Pioneer Natural  Resources Company (the "Company") are subject to a
number of risks and uncertainties that may cause the Company's actual results in
future periods to differ materially from the forward-looking  statements.  These
risks and uncertainties include,  among other things,  volatility of oil and gas
prices,  product  supply  and  demand,   competition,   the  ability  to  obtain
environmental  and  other  permits  and the  timing  thereof,  other  government
regulation  or action,  third  party  approvals,  international  operations  and
associated  international  political and economic instability,  litigation,  the
costs  and  results  of  drilling  and  operations,   availability  of  drilling
equipment,  Pioneer's ability to replace reserves,  implement its business plans
(including its plan to repurchase  stock), or complete its development  projects
as scheduled,  access to and cost of capital,  uncertainties  about estimates of
reserves, the assumptions underlying production forecasts,  quality of technical
data, environmental and weather risks, acts of war or terrorism. These and other
risks  are  described  in the  Company's  2005  Annual  Report  on Form 10-K and
Quarterly Reports on Form 10-Q that are available from the Company or the United
States Securities and Exchange Commission.

     On May 9, 2006, the Company issued a news release with financial statements
and schedules that are attached hereto as exhibit 99.1. In the news release, the
Company  announced  financial and operating  results for the quarter ended March
31,  2006,  provided an  operations  update and provided  the  Company's  second
quarter financial outlook based on current expectations.

Item 9.01.   Financial Statements and Exhibits

       (d)   Exhibits

             99.1   News Release and  Schedules Attached to  News Release  dated
                    May 9, 2006.



                                       3








                       PIONEER NATURAL RESOURCES COMPANY

                                S I G N A T U R E


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.


                                 PIONEER NATURAL RESOURCES COMPANY



 Date: May 9, 2006               By: /s/ Darin G. Holderness
                                     ----------------------------------
                                     Darin G. Holderness
                                     Vice President and Chief Accounting Officer





                                       4






                        PIONEER NATURAL RESOURCES COMPANY

                                  EXHIBIT INDEX



Exhibit No.         Description
-----------         -----------

  99.1(a)           News Release and Schedules Attached to News Release dated
                    May 9, 2006.

-------------
(a) Filed herewith.



                                       5