As filed with the Securities and Exchange Commission on August 17, 2004
                                                Registration No. 333-_______


                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

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

                                    FORM S-8

                             REGISTRATION STATEMENT
                        UNDER THE SECURITIES ACT OF 1933

                          CHESAPEAKE ENERGY CORPORATION
             (Exact name of registrant as specified in its charter)


       OKLAHOMA                                       73-1395733
(State of Incorporation)                   (I.R.S. Employer Identification No.)


            6100 NORTH WESTERN AVENUE, OKLAHOMA CITY, OKLAHOMA 73118
               (Address of principal executive offices) (zip code)

                    CHESAPEAKE ENERGY CORPORATION SAVINGS AND
                           INCENTIVE STOCK BONUS PLAN
                            (Full title of the plans)

                               AUBREY K. MCCLENDON
                            CHAIRMAN OF THE BOARD AND
                             CHIEF EXECUTIVE OFFICER
                          CHESAPEAKE ENERGY CORPORATION
                            6100 NORTH WESTERN AVENUE
                          OKLAHOMA CITY, OKLAHOMA 73118
                    (Name and address for agent for service)
                                 (405) 848-8000
          (Telephone number, including area code, of agent for service)

                         CALCULATION OF REGISTRATION FEE


============================= ================ ================= ==================== ====================
        Title of                  Amount          Proposed          Proposed               Amount of
Securities to be Registered       to be           Maximum            Maximum           Registration Fee(2)
                               Registered(1)    Offering Price      Aggregate
                                                 Per Share(2)     Offering Price(2)
- ----------------------------- ---------------- -------------------------------------- --------------------
                                                                                 

Common Stock, $.01 par         1,000,000           $14.23           $14,230,000              $1,803
value per share
============================= ================ ================= ==================== ====================


(1)    Pursuant  to Rule  416(c),  this  registration  statement  also covers an
       indeterminate  amount of interests to be offered or sold  pursuant to the
       plan named above.
(2)    Calculated  pursuant to paragraphs  (c) and (h) of Rule 457, based on the
       average  of the high and low  prices of the  Common  Stock of  Chesapeake
       Energy Corporation on the New York Stock Exchange on August 13, 2004.


EXPLANATORY NOTE By this registration statement, Chesapeake Energy Corporation is registering an additional 1,000,000 shares of its common stock, $.01 par value, to be offered under the Chesapeake Energy Corporation Savings and Incentive Stock Bonus Plan. Chesapeake has previously filed two registration statements relating to plan interests and 560,000 shares of its common stock offered pursuant to the plan (SEC File Nos. 333-07255 and 333-30324 filed on January 28, 1996 and February 14, 2000, respectively). The contents of these two prior registration statements are incorporated by reference into this registration statement pursuant to General Instruction E of Form S-8. The consents filed with this registration statement are set forth in the Exhibit Index. 2

SIGNATURES THE REGISTRANT. Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Oklahoma City, State of Oklahoma on August 17, 2004. CHESAPEAKE ENERGY CORPORATION By: /S/ AUBREY K. MCCLENDON ---------------------------------- Aubrey K. McClendon Chairman of the Board and Chief Executive Officer Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed below by the following persons in the capacities indicated on August 17, 2004. SIGNATURE TITLE /S/ AUBREY K. MCCLENDON Chairman of the Board, Chief Executive - ------------------------------------- Officer and Director Aubrey K. McClendon (Principal Executive Officer) /S/ TOM L. WARD President, Chief Operating Officer and - ------------------------------------- Director Tom L. Ward /S/ MARCUS C. ROWLAND Executive Vice President and Chief - ------------------------------------- Financial Officer Marcus C. Rowland (Principal Financial Officer) /S/ MICHAEL A. JOHNSON Senior Vice President - Accounting - ------------------------------------ (Principal Accounting Officer) Michael A. Johnson /S/ FRANK KEATING Director - ------------------------------------ Frank Keating /S/ BREENE M. KERR* Director - ------------------------------------ Breene M. Kerr /S/ CHARLES T. MAXWELL Director - ------------------------------------ Charles T. Maxwell /S/ SHANNON SELF* Director - ------------------------------------ Shannon Self /S/ FREDERICK B. WHITTEMORE* Director - ------------------------------------- Frederick B. Whittemore *By: /S/ AUBREY K. MCCLENDON ------------------------------ Aubrey K. McClendon Attorney in Fact 3

THE PLAN. Pursuant to the requirements of the Securities Act of 1933, the Plan Administrator has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized in the City of Oklahoma City, State of Oklahoma, on August 17, 2004. CHESAPEAKE ENERGY CORPORATION SAVINGS AND INCENTIVE STOCK BONUS PLAN By: CHESAPEAKE ENERGY CORPORATION By: /S/ MARTHA A. BURGER ----------------------------- Name: Martha A. Burger Title: Treasurer and Senior Vice President - Human Resources 4

EXHIBIT INDEX Exhibit NUMBER DESCRIPTION ------ ----------- 23.1 Consent of PricewaterhouseCoopers LLP 23.2 Consent of Ryder Scott Company L.P. 23.3 Consent of Lee Keeling and Associates, Inc. 23.4 Consent of Netherland, Sewell & Associates, Inc. 24.1 Power of Attorney 5

                                  EXHIBIT 23.1

            CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
            --------------------------------------------------------


We  hereby  consent  to the  incorporation  by  reference  in this  Registration
Statement  on Form S-8 of  Chesapeake  Energy  Corporation  of our report  dated
February  29,  2004  relating  to  the  consolidated  financial  statements  and
financial statement schedule of Chesapeake Energy Corporation,  which appears in
Chesapeake  Energy  Corporation's  Annual Report on Form 10-K for the year ended
December 31, 2003.

/S/PRICEWATERHOUSECOOPERS LLP
- -----------------------------
PricewaterhouseCoopers LLP


Oklahoma City, Oklahoma
August 16, 2004

                                  EXHIBIT 23.2

                      CONSENT OF RYDER SCOTT COMPANY, L.P.
                      ------------------------------------

As  independent  oil and gas  consultants,  Ryder Scott  Company,  L.P.,  hereby
consents to the  incorporation  by reference in the  Registration  Statement on
Form S-8, to be filed with the  Securities  and Exchange  Commission on or about
August 17,  2004, of  information  from our reserve  report dated  February 23,
2004,  entitled  "Chesapeake  Energy Corporation - Estimated Future Reserves and
Income Attributable to Certain Leasehold Interests as of December 31, 2003."

/S/ RYDER SCOTT COMPANY, L.P.
- -----------------------------
Ryder Scott Company, L.P.


Houston, Texas
August 17, 2004

                                  EXHIBIT 23.3

                   CONSENT OF LEE KEELING AND ASSOCIATES, INC.
                   -------------------------------------------

As independent oil and gas consultants,  Lee Keeling and Associates, Inc. hereby
consents to the incorporation by reference in the Chesapeake Energy  Corporation
Registration  Statement on Form S-8 to be filed on or about August 17, 2004, of
information  from our reserve report with respect to the oil and gas reserves of
Chesapeake Energy  Corporation  dated February 16, 2004 and entitled  "Appraisal
Oil and Gas Properties Interests Owned by Chesapeake Energy Corporation Selected
Properties Constant Prices and Expenses Effective Date January 1, 2004."

/S/ LEE KEELING AND ASSOCIATES, INC.
- ------------------------------------

Lee Keeling and Associates, Inc.


Tulsa, Oklahoma
August 17, 2004

                                  EXHIBIT 23.4


            CONSENT OF INDEPENDENT PETROLEUM ENGINEERS AND GEOLOGISTS
            ---------------------------------------------------------

As independent oil and gas consultants,  Netherland, Sewell & Associates, Inc.
hereby  consents to the  incorporation  by  reference in the  Chesapeake  Energy
Corporation  Registration  Statement  on Form S-8 to be filed on or about August
17,  2004, of  information  from our reserve report with respect to the oil and
gas  reserves of  Chesapeake  Energy  Corporation  dated  February  17, 2004 and
entitled   "Estimate  of  Reserves  and  Future  Revenue  to  Chesapeake  Energy
Corporation  Interest in Certain Oil and Gas Properties  located in Oklahoma and
Texas as of December 31, 2003,  Based on Constant Prices and Costs in accordance
with Securities and Exchange Commission Guidelines."


NETHERLAND, SEWELL & ASSOCIATES, INC.

By: /S/ C.H. SCOTT REES
    -------------------------------------------------

C.H. (Scott) Rees III
President and Chief Operating Officer

Dallas Texas
August 17, 2004

                                  EXHIBIT 24.1

                                POWER OF ATTORNEY
                                -----------------

         We,  the  undersigned  officers  and  directors  of  Chesapeake  Energy
Corporation  (hereinafter,  the "Company") hereby severally constitute Aubrey K.
McClendon,  Tom L. Ward and Marcus C. Rowland, and each of them, severally,  our
true and  lawful  attorneys  in fact with full power to them and each of them to
sign for us, and in our names as officers or directors, or both, of the Company,
one or more  Registration  Statements  on Form S-8, and any  amendments  thereto
(including post-effective amendments),  for the purpose of registering under the
Securities Act of 1933 (i) shares of the Company's Common Stock,  $.01 par value
per share, to be acquired pursuant to the Chesapeake Energy Corporation  Savings
and Incentive Stock Bonus Plan (the "Plan") and (ii) interests in the Plan, each
as it may be amended from time to time, granting unto said attorneys-in-fact and
agents, and each of them, full power and authority to do and to perform each and
every  act and  thing  requisite  and  necessary  to be done  in and  about  the
premises,  as  fully  to all  intents  and  purposes  as he might or could do in
person,  hereby  ratifying and  confirming all that said  attorneys-in-fact  and
agents, or any of them, may lawfully do or cause to be done by virtue hereof.

DATED this 17th day of August, 2004


/S/ MICHAEL A. JOHNSON
- --------------------------------
Michael A. Johnson, Senior
Vice President - Accounting
 (Principal Accounting Officer)


/S/ FRANK KEATING
- --------------------------------
Frank Keating, Director


/S/ CHARLES T. MAXWELL
- --------------------------------
Charles T. Maxwell, Director