UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION


                             WASHINGTON, D.C. 20549


                                    FORM 11-K

(Mark One)

         [X]      ANNUAL REPORT PURSUANT TO SECTION 15(D) OF THE
                           SECURITIES EXCHANGE ACT OF 1934

                   For the fiscal year ended December 31, 2003

                                       or

         [  ]     TRANSITION REPORT PURSUANT TO SECTION 15(D) OF THE
                           SECURITIES EXCHANGE ACT OF 1934

               For the Transition Period from _______ to ________

                         Commission file number 33-53542

A. Full title of the plan and the address of the plan, if different from that
   of the issuer named below:

                     Unit Corporation Employees' Thrift Plan

B. Name of issuer of the securities held pursuant to the plan and the address
   of its principal executive office:

                                Unit Corporation
                          7130 South Lewis, Suite 1000
                              Tulsa, Oklahoma 74136





                     Unit Corporation Employees' Thrift Plan

                                    Index to

                 Financial Statements and Supplemental Schedules

Report of Independent Registered Public Accounting Firm....................1

Financial Statements.......................................................2

   Statements of Net Assets Available For Benefits at
     December 31, 2003 and 2002............................................2

   Statements of Changes in Net Assets Available For Benefits
     for the year ended December 31, 2003 and 2002.........................3

   Notes to Financial Statements...........................................4

Supplemental Schedules*....................................................9

   Schedule H, line 4i, Schedule of Assets (Held at End of Year)...........9

   Schedule H, line 4j, Schedule of Reportable Transactions
     for the year ended December 31, 2003.................................10






* Other schedules required by Section 2520.103-10 of the Department of Labor's
Rules and Regulations for the Reporting and Disclosure under the Employee
Retirement Income Security Act ("ERISA") of 1974 have been omitted because they
are not applicable.








Report of Independent Registered Public Accounting Firm

To the Participants and Administrator
Unit Corporation Employees' Thrift Plan

     In our opinion, the accompanying statements of net assets available for
benefits and the related statements of changes in net assets available for
benefits present fairly, in all material respects, the net assets available for
benefits of Unit Corporation Employees' Thrift Plan (the "Plan") at December 31,
2003 and 2002, and the changes in net assets available for benefits for the
years ended December 31, 2003 and 2002 in conformity with accounting principles
generally accepted in the United States of America. These financial statements
are the responsibility of the Plan's management; our responsibility is to
express an opinion on these financial statements based on our audits. We
conducted our audits of these financial statements in accordance with the
Standards of the Public Company Accounting Oversight Board (United States),
whose standards require that we plan and perform the audit to obtain reasonable
assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements, assessing the
accounting principles used and significant estimates made by management, and
evaluating the overall financial statement presentation. We believe that our
audits provide a reasonable basis for our opinion.

     Our audits were conducted for the purpose of forming an opinion on the
basic financial statements taken as a whole. The supplemental schedules, as
listed in the accompanying index, are presented for the purpose of additional
analysis and are not a required part of the basic financial statements but are
supplementary information required by the Department of Labor's Rules and
Regulations for Reporting and Disclosure under the Employee Retirement Income
Security Act of 1974. These supplemental schedules are the responsibility of the
Plan's management. The supplemental schedules have been subjected to the
auditing procedures applied in the audits of the basic financial statements and,
in our opinion, are fairly stated in all material respects in relation to the
basic financial statements taken as a whole.


PricewaterhouseCoopers LLP


Tulsa, Oklahoma
October 7,  2004

















                                       1



UNIT CORPORATION EMPLOYEES' THRIFT PLAN
Financial Statements
Statements of Net Assets Available For Benefits at December 31, 2003 and 2002


                                                        December 31,
                                            ------------------------------------
                                                  2003                2002
                                            ----------------    ----------------
Assets
Investments (Notes 2 and 4)
    Registered Mutual Funds                 $    15,635,877     $    11,689,278
    Common stock of Unit Corporation              9,553,370           6,634,924
                                            ----------------    ----------------
            Total investments                    25,189,247          18,324,202
                                            ----------------    ----------------
Receivables
    Employer's contribution                       1,409,836           1,079,329
    Employees' contribution                          62,451              48,605
    Accrued interest and dividends                    6,722               7,289
    Due from brokers                                 30,862                 539
                                            ----------------    ----------------
            Total receivables                     1,509,871           1,135,762
                                            ----------------    ----------------
Total Assets                                     26,699,118          19,459,964
                                            ----------------    ----------------

Liabilities
Payable to broker                                   (89,303)            (25,275)
Payable to trustee                                  (31,374)                ---
                                            ----------------    ----------------
Total liabilities                                  (120,677)            (25,275)
                                            ----------------    ----------------
            Net assets available for
              plan benefits                 $    26,578,441     $    19,434,689
                                            ================    ================


    The accompanying notes are an integral part of these financial statements

                                       2



UNIT CORPORATION EMPLOYEES' THRIFT PLAN
Statements of Changes in Net Assets Available For Benefits for the Years
ended December 31, 2003 and 2002

                                                   Years Ended December 31,
                                            ------------------------------------
                                                  2003                2002
                                            ----------------    ----------------

Additions
Investment income
    Interest and dividend income            $       156,802     $       162,866
    Net appreciation  in fair
      value of investments                        4,138,721           1,820,769
                                            ----------------    ----------------
                                                  4,295,523           1,983,635
Contributions
    Employer                                      1,407,464           1,080,119
    Employee                                      1,996,588           1,548,605
    Rollovers                                       220,939              20,354
    Transfers in (Note 1)                               360             334,197
                                             ---------------    ----------------
            Total additions                       7,920,874           4,966,910
                                             ---------------    ----------------
Deductions
Distributions                                      (777,122)         (1,557,821)
                                             ---------------    ----------------
            Net increase                          7,143,752           3,409,089
Net assets available for plan benefits
Beginning of the year                            19,434,689          16,025,600
                                             ---------------    ----------------
End of the year                              $   26,578,441     $    19,434,689
                                             ===============    ================













    The accompanying notes are an integral part of these financial statements

                                       3



UNIT CORPORATION EMPLOYEES' THRIFT PLAN
Notes to Financial Statements

1.   Description of Plan

     The following description of the Unit Corporation Employees' Thrift Plan
     (the "Plan"), formerly Unit Drilling and Exploration Company Employees'
     Thrift Plan, provides only general information. Participants should refer
     to the Plan for a more complete description of the Plan's provisions.

     General

     The Plan is a defined contribution plan covering all eligible employees of
     Unit Corporation (the "Company"), the Plan sponsor. Bank of Oklahoma, N.A.
     serves as trustee for the Plan under a trust agreement dated August 1,
     1985. The Plan is subject to the provisions of the Employment Retirement
     Income Security Act of 1974, as amended ("ERISA").

     The Plan allows participation on the first day of any service month
     immediately following completion of the attainment of age 21 and three
     months of service.

     Contributions

     Effective January 1, 2002, the Plan allows participants to contribute up to
     100% of their total monthly compensation (including overtime pay, bonuses
     and other extraordinary compensation), as increased from 19% prior to
     January 1, 2002.

     The Company may contribute to the Plan a specified percentage of
     participant contributions determined by the Company's Board of Directors,
     limited to 6% of participant compensation. The Company may also contribute
     an additional amount from its net profits and accumulated net profits as
     determined by the Board of Directors from time to time. The Company
     contribution for the Plan year 2003 was $1,407,464, which was 100% of
     participating employees first 6% of contributions. The Company contribution
     for the Plan year 2002 was $1,080,119, which was 100% of participating
     employees' first 6% of contributions.

     Transfers In

     Effective December 13, 2002, the Cactus Drilling Company 401(k) Plan for
     Hourly Employees and the Cactus Drilling Company 401(k) Plan for Salary
     Employees was merged into the Unit Corporation Employees' Thrift Plan,
     which resulted in $334,197 in assets transferred into the Plan during 2002.

     Participants' Accounts

     Each participant's account is credited with the participant's contribution,
     the Company's contribution, if any, and Plan earnings. Plan earnings are
     allocated based on account balances as of the preceding valuation date,
     plus the proportionate allocation of contributions received since the
     previous valuation date.

     Vesting, Payment of Benefits and Forfeitures

     Participants are immediately vested in their own contributions plus actual
     earnings thereon. Participants are also fully vested in amounts previously
     transferred from the Unit Drilling and Exploration Company Employee Stock
     Ownership Plan. Vesting of the Company's contribution and related earnings
     is based on years of employee service or the attainment of normal
     retirement age for Company contributions made before 1999 and are as
     follows:

          Vesting Service                           Nonforfeitable
                                                    Percentage
          Less than 2 years                         0%
          2 years but less than 3 years             20%
          3 years but less than 4 years             40%
          4 years but less than 5 years             60%
          5 years but less than 6 years             80%
          6 years or more                           100%

                                       4



     In 1999, the Company began matching under the IRS Safe Harbor rules which
     require these contributions to be immediately 100 percent vested.

     Normal retirement age is 65. Participants may generally elect the form of
     payment from several options, including a lump sum payment, installment
     payments over a specified number of years not to exceed the participant's
     remaining life expectancy, or by transferring to another plan which is
     qualified under Section 401(c) of the Internal Revenue Code.

     The participant's account balance is retained in the Plan until the
     participant requests a payment due to death, disability or retirement. At
     the Plan administrative committee's discretion and with the terminated
     participant's consent, payment of such vested benefits may be made at an
     earlier date. Participants forfeit the nonvested portion of their account
     upon distribution of vested benefits. Forfeited non-vested amounts, which
     were not significant in 2003 or 2002, reduce the amount of employer
     matching contributions for the Plan year in which participants receive a
     distribution of their entire vested account.

     Withdrawals

     Participants may withdraw their salary reduction contributions only upon
     termination, attainment of age 59-1/2 or normal retirement age, or a
     limited hardship ruling which has been authorized by the Plan
     administrative committee. The vested portion of Company contributions may
     be withdrawn only upon termination of employment or attainment of age
     59-1/2 if 100 percent vested.

     Investment Options

     The Plan provides for the participant contributions to be invested at the
     election of the participant into any combination of the following options:

     American Performance Cash Management Fund

     The American Performance Cash Management Fund seeks current income with
     liquidity and stability of principal by investing in U.S. dollar
     denominated, high-quality short-term debt and other short-term obligations
     of high quality.

     American Performance Equity Fund

     American Performance Equity Fund seeks growth of capital and, secondarily,
     income. The fund normally invests at least 70% of assets in a diversified
     portfolio of common stocks and convertible securities.

     American Performance Balanced Fund

     American Performance Balanced Fund seeks current income; long-term capital
     growth is secondary. The fund invests in both equities and debt securities,
     but it maintains at least 25% of assets in fixed-income securities.

     PIMCO Total Return Fund

     The PIMCO Total Return Fund is a high quality, well-diversified,
     intermediate maturity portfolio that seeks to maintain the value of
     original investments and to prudently maximize investments earnings.

     Dodge & Cox Balanced Fund

     The Dodge & Cox Balanced Fund seeks conservation of principal and long-term
     growth of principal of income by investing in a diversified portfolio of
     common stocks, preferred stocks, and fixed income securities.

     PIMCO Capital Appreciation Fund

     The PIMCO Capital Appreciation Fund seeks capital growth by primarily
     investing in common stocks of companies with capitalizations of at least
     $100 million.

     Neuberger & Berman Partners Trust Fund

     The Neuberger & Berman Partners Trust Fund seeks capital growth by
     investing in preferred stocks, convertible securities, and debt securities.

     Neuberger & Berman Genesis Trust Fund

     The Neuberger & Berman Genesis Trust Fund seeks capital appreciation by
     primarily investing in common stocks of companies with market
     capitalizations less than $1.5 billion.

                                       5


     Fidelity Advisors Mid Cap Fund

     Fidelity Advisor Mid Cap Fund seeks long-term growth capital. The fund
     normally invests at least 65% of assets in companies with medium market
     capitalizations.

     Janus Fund

     Janus Fund seeks long-term capital growth consistent with preservation of
     capital. The fund invests primarily in common stocks of larger,
     more-established companies, though it may invest in a large number of
     issuers of any size.

     T. Rowe Price New Horizons Fund

     T. Rowe Price New Horizons Fund seeks capital appreciation; current income
     is not a factor. The fund invests primarily in common stocks of small,
     rapidly growing companies.

     Vanguard 500 Index Fund

     Vanguard 500 Index Fund seeks investment results that correspond with the
     price and yield performance of the S&P 500 Index.

     Vanguard Fixed Income Security Fund

     Vanguard Long-Term Corporate Bond Fund seeks current income consistent with
     maintenance of principal and liquidity.

     Common Stock of Unit Corporation

     The Unit Corporation common stock fund includes contributions from the
     Company and participants. Participant contributions are directed solely by
     the participants. Contributions from the Company are directed by the
     Company. Once the common stock has been contributed to the Plan the
     participants may sell the common stock and allocate the proceeds to other
     funds in the Plan. All other funds are participant directed.

2.   Summary of Significant Accounting Policies

     Basis of Presentation

     The financial statements of the Plan are presented on the accrual basis of
     accounting.

     Investment Valuation

     Investments in Unit Corporation Common Stock are stated at current market
     value as established by quoted market prices in an active market. All other
     investments, which are registered open-ended mutual funds, are also stated
     at current market value.

     The Plan presents in the statement of changes in net assets the net
     appreciation (depreciation) in the fair value of its investments which
     consists of the realized gains or losses and the unrealized appreciation
     (depreciation) on those investments.

     Income Recognition

     Purchases and sales of securities are recorded on a settlement date basis
     which is not materially different from using a trade date basis. Interest
     and dividend income and contributions are recorded on an accrual basis.

     Administrative Expenses

     The costs of administering the Plan are borne by the Company and are not
     reflected in the statements included herein. Such costs totaled
     approximately $27,000 and $22,000 for the years ended December 31, 2003 and
     2002, respectively.

     Payments of Benefits

     Distributions are recorded when paid to participants.

     Use of Estimates

     The preparation of financial statements in conformity with accounting
     principles generally accepted in the United States of America requires the
     plan administrator to make significant estimates and assumptions that
     affect the reported amounts of net assets available for benefits and, when
     applicable, disclosures of contingent assets and liabilities at the date of
     the financial statements and the reported amounts of changes in net assets

                                       6


     available for benefits during the reporting period. Actual results could
     differ from those estimates.

3.   Plan Termination

     Although it has expressed no intention to do so, the Company has the right
     under the Plan to discontinue its contributions at any time and to
     terminate the Plan subject to the provisions of the Employee Retirement
     Income Security Act of 1974. In the event of Plan termination, participants
     will become fully vested in their accounts.

4.   Investments

     All investments were held on behalf of the Plan by the trustee under a
     trust agreement dated August 1, 1985. Investments held by the Plan
     representing 5% or more of the Plan's net assets are as follows:

                                                                       Fair
                                                    Shares            Value
     December 31, 2003
     Registered mutual funds
         American Performance Cash
           Management Fund                          3,943,679    $    3,943,679
         PIMCO Total Return Fund                      147,349         1,578,111
         Dodge & Cox Balanced Fund                     42,178         3,080,646
         PIMCO Cap Appreciation Fund                  158,940         2,525,557
         Neuberger & Berman Genesis Trust Fund         69,585         2,576,739
     Common stock of Unit Corporation                 405,663         9,553,370

     December 31, 2002
     Registered mutual funds
         American Performance Cash
           Management Fund                          3,705,979    $    3,705,981
         PIMCO Total Return Fund                      133,535         1,424,823
         Dodge & Cox Balanced Fund                     43,068         2,616,396
         PIMCO Cap Appreciation Fund                  143,091         1,794,356
         Neuberger & Berman Genesis Trust Fund         55,809         1,570,458
     Common stock of Unit Corporation                 357,678         6,634,924




5.   Nonparticipant-Directed Investments

     The following tables set forth information related to the Unit Corporation
     common stock fund's assets available for benefits as of December 31, 2003
     and 2002 and the changes in such assets for the years then ended.



                                                     2003              2002
                                               ---------------   ---------------

           Net assets
           Unit Corporation common stock       $    9,553,370    $    6,634,924
           Employer's contribution receivable       1,409,836         1,079,329
           Employees' contribution receivable          13,350            16,753
                                               ---------------   ---------------
                                               $   10,976,556    $    7,731,006
                                               ===============   ===============

                                       7

                                                     2003              2002
                                               ---------------   ---------------

           Changes in net assets
           Contributions                       $    1,841,384    $    1,473,961
           Net appreciation                         2,229,910         2,726,798
           Distributions                             (378,033)         (453,663)
           Transfers                                 (447,711)       (2,522,688)
                                               ---------------   ---------------
                                               $    3,245,550    $    1,224,408
                                               ===============   ===============


6.   Income Tax Status

     A favorable determination of the qualification of the Plan under Section
     401 of the Internal Revenue Code and the tax exempt status of the Trust
     under Section 501 was received from the Internal Revenue Service in August
     2001 covering amendments to the Plan subsequent to its previous
     determination letter obtained in June 1998. There have been amendments
     since the August 2001 determination letter. However, the plan administrator
     and the Plan's tax counsel believe that the Plan is currently designed and
     being operated in compliance with the applicable requirements of the
     Internal Revenue Code. Therefore, no provision for income taxes has been
     included in the Plan's financial statements.

7.   Risks and Uncertainties

     The Plan provides for various investment options in any combination of
     stocks, bonds, fixed income securities, mutual funds, and other investment
     securities. Investment securities are exposed to various risks, such as
     interest rate, market, and credit risks. Due to the level of risk
     associated with certain investment securities, it is at least reasonably
     possible that changes in the values of investment securities will occur in
     the near term and that such changes could materially affect participants'
     account balances and the amounts reported in the statement of net assets
     available for plan benefits and the statement of changes in net assets
     available for plan benefits.

8.   Benefits Due to Participants

     At December 31, 2003 and 2002, there were no benefits payable to
     participants who had elected to withdraw from the Plan but had not yet been
     paid.

9.   Party-In-Interest

     Certain Plan investments are shares of Unit Corporation common stock. These
     transactions represent investments in the Company and, therefore, qualify
     as party-in-interest. The fair value of this investment totaled $9,553,370
     and $6,634,924 at December 31, 2003 and 2002, respectively.

10.  Subsequent Event

     Effective June 25, 2004, the Serdrilco, Inc. 401(k) Savings Plan was merged
     into the Unit Corporation Employees' Thrift Plan, which resulted in
     approximately $1.9 million in assets being transferred into the Plan.















                                       8



UNIT CORPORATION EMPLOYEES' THRIFT PLAN
Supplemental Schedules


Schedule H, line 4i, Schedule of Assets (Held at End of Year)
December 31, 2003


        Identity of Issuer and                                         Current
       Description of Investment              Shares       Cost         Value

Registered mutual funds
    American Performance Cash
      Management Fund                       3,943,679  $ 3,943,679  $ 3,943,679
    American Performance Equity Fund           14,533      111,961      114,378
    American Performance Balanced Fund          2,319       25,824       28,683
    PIMCO Total Return Fund                   147,349    1,566,622    1,578,111
    Dodge & Cox Balanced Fund                  42,178    2,762,194    3,080,646
    PIMCO Cap Appreciation Fund               158,940    2,985,866    2,525,557
    Neuberger & Berman Partners Trust Fund     26,711      403,798      435,926
    Neuberger & Berman Genesis Trust Fund      69,585    2,026,398    2,576,739
    Fidelity Advisors Mid Cap Fund             12,896      232,612      289,008
    Janus Fund                                  8,463      174,808      198,625
    T. Rowe Price New Horizons Fund             9,748      206,484      241,752
    Vanguard 500 Index Fund                     2,143      185,316      220,053
    Vanguard Fixed Income Security Fund        42,183      391,595      391,039
Common stock of Unit Corporation *            405,663    5,160,179    9,553,370
Participant loans (maturing 8/30/04 -
  10/12/07, interest rates of 5.28% -
  9%)                                                          ---       11,681
                                                       ------------ ------------
                                                       $20,177,336  $25,189,247
                                                       ============ ============

* - Represents investments which qualify as party-in-interest.













                                       9



UNIT CORPORATION EMPLOYEES' THRIFT PLAN


Schedule H, line 4j, Schedule of Reportable Transactions
for the year ended December 31, 2003

           Identity
Number     of Party
  of       Involved/                                      CV of Asset
Trans-    Description  Purchase    Selling      Cost of    on Date of    Gain
actions    of Assets     Price      Price        Asset    Transaction   (Loss)

Series
273      BOSC Inc./   $      ---  $1,884,016  $1,069,501  $1,884,016   $814,515
         Unit
         Corporation
         Common Stock

177      BOSC Inc./   $1,525,665  $      ---  $1,525,665  $1,525,665   $    ---
         Unit
         Corporation
         Common Stock






                                    SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the
trustees (or other persons who administer the employee benefit plan) have duly
caused this annual report to be signed on its behalf by the undersigned hereunto
duly authorized.


                     UNIT CORPORATION EMPLOYEES' THRIFT PLAN




Unit Corporation as Administrator of the Plan


By:  /s/ Mark E. Schell                            Date: October 14, 2004
- ---------------------------------
Mark E. Schell
Senior Vice President, General Counsel and
Secretary













                                       10



                                  EXHIBIT INDEX


     Exhibit Number    Exhibit

     23.1              Consent of Independent Registered Public Accounting Firm















































                                       11