As filed with the Securities and Exchange Commission on March 15, 1995.
                                                       Registration No. 33-57645
- --------------------------------------------------------------------------------


                       SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C.  20549

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

                   POST-EFFECTIVE AMENDMENT NO. 1 ON FORM S-8
                     TO REGISTRATION STATEMENT ON FORM S-4
                        UNDER THE SECURITIES ACT OF 1933

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

                          LOCKHEED MARTIN CORPORATION
             (Exact name of registrant as specified in its charter)



         Maryland                                         52-1893632
(State or other jurisdiction of             (I.R.S. Employer Identification No.)
incorporation or organization)


                              6801 Rockledge Drive
                            Bethesda, Maryland 20817
                    (Address of principal executive offices)

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

                    1979 Stock Option Plan for Key Employees
                    1984 Stock Option Plan for Key Employees
           Martin Marietta Corporation Omnibus Securities Award Plan
           Lockheed Corporation 1982 Employee Stock Purchase Program
           Lockheed Corporation 1986 Employee Stock Purchase Program
            Lockheed Corporation 1992 Employee Stock Option Program
                           (Full title of the plans)

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

                           Stephen M. Piper, Esquire
                           Assistant General Counsel
                          Lockheed Martin Corporation
                              6801 Rockledge Drive
                            Bethesda, Maryland 20817
                                 (301) 897-6000
 (Name, address, including zip code, and telephone number, including area code,
                             of agent for service)

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

     This Post-Effective Amendment covers shares of the Registrant's Common
Stock, par value $1.00 per share, originally registered on the Registration
Statement on Form S-4 (No. 33-57645) to which this is an amendment.  The
registration fees in respect of such Common Stock were paid at the time of the
original filing of the Registration Statement on Form S-4 relating to such
Common Stock.

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

 
                                    PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT


Item 3.  Incorporation of Documents by Reference.
         --------------------------------------- 

          The following documents filed by the Registrant, Martin Marietta
Corporation or Lockheed Corporation with the Securities and Exchange Commission
(the "Commission") are incorporated herein by reference and made a part hereof:

          (a) The Registrant's Joint Proxy Statement/Prospectus filed pursuant
to Registration Statement No. 33-57645 on Form S-4 filed with the Commission on
February 9, 1995;

          (b) The description of the Registrant's Common Stock contained in the
Registrant's Registration Statement on Form 8-B filed with the Commission
pursuant to Section 12 of the Securities Exchange Act of 1934 (the "Exchange
Act") (as amended on Form 8-B/A filed with the Commission on March 9, 1995), and
any amendment or report filed for the purpose of updating such description;

          (c) Martin Marietta Corporation's Current Report on Form 8-K filed
with the Commission on February 13, 1995;

          (d) Martin Marietta Corporation's Current Report on Form 8-K filed
with the Commission on February 17, 1995;

          (e) Lockheed Corporation's Current Report on Form 8-K filed with the
Commission on February 21, 1995; and

          (f) The Registrant's Current Report on Form 8-K filed with the
Commission on March 15, 1995.

          All documents subsequently filed by the Registrant, Martin Marietta
Corporation or Lockheed Corporation pursuant to Sections 13(a), 13(c), 14 or
15(d) of the Exchange Act prior to filing of a post-effective amendment which
indicates that all securities offered have been sold or which deregisters all
securities then remaining unsold, shall be deemed to be incorporated by
reference into this Registration Statement and to be a part hereof from the date
of the filing of such documents.

Item 4.  Description of Securities.
         ------------------------- 

          Not Applicable

                                     - 1 -

 
Item 5.  Interests of Named Experts and Counsel.
         -------------------------------------- 

          The Opinion of Counsel as to the legality of the securities being
issued (constituting Exhibit 5) has been rendered by counsel who is a full-time
employee of the Registrant and who was a full time employee of Martin Marietta
Corporation and, as such, is eligible to participate in the plans sponsored by
Martin Marietta Corporation.

Item 6.  Indemnification of Directors and Officers.
         ----------------------------------------- 

          The Maryland General Corporation Law authorizes Maryland corporations
to limit the liability of directors and officers to the corporation or its
stockholders for money damages, except (a) to the extent that it is proved that
the person actually received an improper benefit or profit in money, property or
services, for the amount of the benefit or profit in money, property or services
actually received, (b) to the extent that a judgment or other final adjudication
adverse to the person is entered in a proceeding based on a finding that the
person's action or failure to act was the result of active and deliberate
dishonesty and was material to the cause of action adjudicated in the proceeding
or (c) in respect of certain other actions not applicable to the Registrant.
Under the Maryland General Corporation Law, unless limited by charter,
indemnification is mandatory if a director or an officer has been successful on
the merits or otherwise in the defense of any proceeding by reason of his or her
service as a director unless such indemnification is not otherwise permitted as
described in the following sentence. Indemnification is permissive unless it is
established that (a) the act or omission of the director was material to the
matter giving rise to the proceeding and was committed in bad faith or was the
result of active and deliberate dishonesty, (b) the director actually received
an improper personal benefit in money, property or services or (c) in the case
of any criminal proceeding, the director had reasonable cause to believe his or
her act or omission was unlawful.  In addition to the foregoing, a court of
appropriate jurisdiction may under certain circumstances order indemnification
if it determines that the director or officer is fairly and reasonably entitled
to indemnification in view of all the relevant circumstances, whether or not the
director or officer has met the standards of conduct set forth in the preceding
sentence or has been adjudged liable on the basis that a personal benefit was
improperly received in a proceeding charging improper personal benefit to the
director or officer.  If the proceeding was an action by or in the right of the
corporation or involved a determination that the director or officer received an
improper personal benefit, however, no indemnification may be made if the
individual is adjudged liable to the corporation, except to the extent of
expenses approved by a court of competent jurisdiction.

          Article XI of the charter of the Registrant limits the liability of
directors and officers to the fullest extent permitted by the Maryland General
Corporation Law.  Article XI of the charter

                                     - 2 -

 
of the Registrant also authorizes the Registrant to adopt by-laws or resolutions
to provide for the indemnification of directors and officers.  Article VI of the
By-laws of the Registrant provides for the indemnification of the Registrant's
directors and officers to the fullest extent permitted by the Maryland General
Corporation Law.  In addition, the Registrant's directors and officers are
covered by certain insurance policies maintained by the Registrant.

Item 7.  Exemption from Registration Claimed.
         ----------------------------------- 

     Not Applicable


Item 8.  Exhibits.
         -------- 

   4-A.  1979 Stock Option Plan for Key Employees, as amended (included as an
         exhibit to Registration Statement on Form S-4, No. 33-57645 and
         incorporated herein by reference).

   4-B.  1984 Stock Option Plan for Key Employees, as amended (included as an
         exhibit to Registration Statement on Form S-4, No. 33-57645 and
         incorporated herein by reference).

   4-C.  Martin Marietta Corporation Omnibus Securities Award Plan, as amended
         (included as an exhibit to Registration Statement on Form S-4, No. 33-
         57645 and incorporated herein by reference).

   4-D.  Lockheed Corporation 1982 Employee Stock Purchase Program (included as
         an exhibit to Registration Statement on Form S-4, No. 33-57645 and
         incorporated herein by reference).

   4-E.  Lockheed Corporation 1986 Employee Stock Purchase Program (included as
         an exhibit to Registration Statement on Form S-4, No. 33-57645 and
         incorporated herein by reference).

   4-F.  Lockheed Corporation 1992 Employee Stock Option Program (included as
         an exhibit to Registration Statement on Form S-4, No. 33-57645 and
         incorporated herein by reference).

   4-G.  Amendment to Lockheed Corporation 1992 Employee Stock Option Program
         (included as an exhibit to Registration Statement on Form S-4, No. 33-
         57645 and incorporated herein by reference).

     5.  Opinion of Stephen M. Piper, Esquire

  23-A.  Consent of Ernst & Young LLP (Washington, D.C.).

                                     - 3 -

 
  23-B.   Consent of Ernst & Young LLP (Los Angeles, CA).

  23-C.   Consent of KPMG Peat Marwick LLP.

  23-D.   Consent of Arthur Andersen LLP.

  23-E.   Consent of Stephen M. Piper, Esquire (contained in Exhibit 5 hereof).

    24.   Powers of Attorney (included as an exhibit to a Registration Statement
          on Form S-8 relating to Lockheed Martin Corporation Directors Deferred
          Stock Plan filed by the Registrant with the Commission on March 15,
          1995 and incorporated herein by reference).

Item 9.   Undertakings.
          ------------ 

     (a) The undersigned Registrant hereby undertakes:

          (1) To file, during any period in which offers or sales are being
made, a post-effective amendment to this registration statement:

            (i) To include any prospectus required by section 10(a)(3) of the
Securities Act of 1933;

           (ii) To reflect in the prospectus any facts or events arising after
the effective date of the registration statement (or the most recent post-
effective amendment thereof) which, individually or in the aggregate, represent
a fundamental change in the information set forth in the registration statement;

          (iii) To include any material information with respect to the plan of
distribution not previously disclosed in the registration statement or any
material change to such information in the registration statement;

     Provided, however, that subparagraphs (1)(i) and (1)(ii) do not apply if
the information required to be included in a post-effective amendment by those
paragraphs is contained in periodic reports filed by the Registrant pursuant to
section 13 or section 15(d) of the Securities Exchange Act of 1934 that are
incorporated by reference in the registration statement.

          (2) That, for the purpose of determining any liability under the
Securities Act of 1933, each such post-effective amendment shall be deemed to be
a new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

                                     - 4 -

 
          (3) To remove from registration by means of a post-effective amendment
any of the securities being registered which remain unsold at the termination of
the offering.

     (b) The undersigned Registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act of 1933, each filing of the
Registrant's annual report pursuant to section 13(a) or section 15(d) of the
Securities Exchange Act of 1934 (and, where applicable, each filing of an
employee benefit plan's annual report pursuant to Section 15(d) of the
Securities Exchange Act of 1934) that is incorporated by reference in the
registration statement shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

     (c) Insofar as indemnification for liabilities arising under the Securities
Act of 1933 may be permitted to directors, officers and controlling persons of
the Registrant pursuant to the foregoing provisions, or otherwise, the
Registrant has been advised that in the opinion of the Securities and Exchange
Commission such indemnification is against public policy as expressed in the Act
and is, therefore, unenforceable.  In the event that a claim for indemnification
against such liabilities (other than the payment by the Registrant of expenses
incurred or paid by a director, officer or controlling person of the Registrant
in the successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the Registrant will, unless in the opinion of its counsel the matter
has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is against public
policy as expressed in the Act and will be governed by the final adjudication of
such issue.

                                     - 5 -

 
                                   SIGNATURES

     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 report to be signed
on its behalf by the undersigned, thereunto duly authorized in the County of
Montgomery, State of Maryland on the date indicated below.

                          LOCKHEED MARTIN CORPORATION

Date:  March 15, 1995                     By:  /s/ Frank H. Menaker, Jr.
                                               -----------------------------
                                               Frank H. Menaker, Jr.
                                               Vice President and
                                               General Counsel


     Pursuant to the requirements of the Securities Act of 1933, this
registration statement has been signed by the following persons in the
capacities and on the date indicated.

Signature                    Title                      Date
- ---------                    -----                      ----           

/s/ Daniel M. Tellep         Chairman of the            March 15, 1995
    ------------------       Board and Chief        
    Daniel M. Tellep*        Executive Officer 
                             and Director       
                       
/s/ Marcus C. Bennett        Senior Vice                March 15, 1995
    ------------------       President, Chief 
    Marcus C. Bennett*       Financial Officer
                             and Director
 
/s/ Robert E. Rulon          Controller and             March 15, 1995
    ------------------       Chief Accounting Officer 
    Robert E. Rulon*   
 
/s/ Norman R. Augustine      Director                   March 15, 1995
    -------------------
    Norman R. Augustine*
 
/s/ Lynne V. Cheney          Director                   March 15, 1995
    ----------------
    Lynne V. Cheney*

 
Signature                    Title                      Date
- ---------                    -----                      ----           
 
/s/ Edwin I. Colodny         Director                   March 15, 1995 
    ----------------
    Edwin I. Colodny*
 
/s/ Lodwrick M. Cook         Director                   March 15, 1995 
    ----------------
    Lodwrick M. Cook*
 
/s/ James L. Everett, III    Director                   March 15, 1995 
    ----------------
    James L. Everett, III*
 
/s/ Houston I. Flournoy      Director                   March 15, 1995 
    ----------------
    Houston I. Flournoy*
 
/s/ James F. Gibbons         Director                   March 15, 1995 
    ----------------
    James F. Gibbons*
 
/s/ Edward E. Hood, Jr.      Director                   March 15, 1995 
    ----------------
    Edward E. Hood, Jr.*
 
/s/ Caleb B. Hurtt           Director                   March 15, 1995 
    ----------------
    Caleb B. Hurtt*
 
/s/ Gwendolyn S. King        Director                   March 15, 1995 
    ----------------
    Gwendolyn S. King*
 
/s/ Lawrence O. Kitchen      Director                   March 15, 1995 
    ----------------
    Lawrence O. Kitchen*
 
/s/ Gordon S. Macklin        Director                   March 15, 1995 
    ----------------
    Gordon S. Macklin*
 
/s/ Vincent N. Marafino      Director                   March 15, 1995 
    ----------------
    Vincent N. Marafino*
 
/s/ Eugene F. Murphy         Director                   March 15, 1995 
    ----------------
    Eugene F. Murphy*
 
/s/ Allen E. Murray          Director                   March 15, 1995  
    ----------------
    Allen E. Murray*

/s/ Frank Savage             Director                   March 15, 1995  
    ------------
    Frank Savage*
 
/s/ Carlisle A.H. Trost      Director                   March 15, 1995 
    ----------------
    Carlisle A.H. Trost*

 
Signature                    Title                      Date
- ---------                    -----                      ----           

/s/ James R. Ukropina        Director                   March 15, 1995
    -----------------                            
    James R. Ukropina*

          *By: /s/ Stephen M. Piper                March 15, 1995
                   ----------------                    
                   (Stephen M. Piper, Attorney-in-fact**)


_____________________

**By authority of Powers of Attorney filed with this Registration
  Statement on Form S-8.

 
                                 EXHIBIT INDEX


Exhibit                                                                    Page
Number                            Description                               No.
- -------                           -----------                              ----

 4-A.     1979 Stock Option Plan for Key Employees, as amended
          (included as an exhibit to Registration Statement on Form S-4,
          No. 33-57645 and incorporated herein by reference).

 4-B.     1984 Stock Option Plan for Key Employees, as amended
          (included as an exhibit to Registration Statement on Form S-4,
          No. 33-57645 and incorporated herein by reference).

 4-C.     Martin Marietta Corporation Omnibus Securities Award Plan,
          as amended (included as an exhibit to Registration Statement on
          Form S-4, No. 33-57645 and incorporated herein by reference).

 4-D.     Lockheed Corporation 1982 Employee Stock Purchase Program
          (included as an exhibit to Registration Statement on Form S-4,
          No. 33-57645 and incorporated herein by reference).

 4-E.     Lockheed Corporation 1986 Employee Stock Purchase Program
          (included as an exhibit to Registration Statement on Form S-4,
          No. 33-57645 and incorporated herein by reference).

 4-F.     Lockheed Corporation 1992 Employee Stock Purchase Program
          (included as an exhibit to Registration Statement on Form S-4,
          No. 33-57645 and incorporated herein by reference).

 4-G.     Amendment to Lockheed Corporation 1992 Employee Stock
          Option Program (included as an exhibit to Registration Statement
          on Form S-4, No. 33-57645 and incorporated herein by reference).

   5.     Opinion of Stephen M. Piper, Esquire

23-A.     Consent of Ernst & Young LLP (Washington, D.C.).

23-B.     Consent of Ernst & Young LLP (Los Angeles, CA).

23-C.     Consent of KPMG Peat Marwick LLP.

23-D.     Consent of Arthur Andersen LLP.

23-E.     Consent of Stephen M. Piper, Esquire (contained in Exhibit 5 hereof).

 
24.       Powers of Attorney (included as an exhibit to a Registration
          Statement on Form S-8 relating to Lockheed Martin Corporation
          Directors Deferred Stock Plan filed by the Registrant with the
          Commission on March 15, 1995 and incorporated herein by reference).


                                                                       EXHIBIT 5
 
           [LETTERHEAD OF LOCKHEED MARTIN CORPORATION APPEARS HERE]



                                March 15, 1995


Lockheed Martin Corporation
6801 Rockledge Drive
Bethesda, Maryland 20817

          Re:  Post-Effective Amendment No. 1 on Form S-8 to
               Registration Statement on Form S-4, No. 33-57645
               (the "Post-Effective Amendment").
               
Ladies and Gentlemen:

      I submit this opinion to you in connection with the filing with the 
Securities and Exchange Commission of the Post-Effective Amendment on the date 
hereof. The Post-Effective Amendment relates to shares of common stock ("Common 
Stock") of Lockheed Martin Corporation (the "Corporation") previously registered
on the Registration Statement on Form S-4, No. 33-57645 in connection with the 
employee benefit plans of Martin Marietta Corporation and Lockheed Corporation 
listed on the cover page of the Post-Effective Amendment (the "Plans"). The 
Plans contemplate that Common Stock may be treasury or authorized by unissued 
shares or may be acquired in the open market. As Assistant General Counsel of 
the Corporation, I have examined such corporate records, certificates and other 
documents and have reviewed such questions of law as I deemed necessary or 
appropriate for the purpose of this opinion.

      Based upon that examination and review, I advise you that in my opinion:

      (i)  the Corporation has been duly incorporated and is validly existing 
           under the laws of the State of Maryland; and

      (ii) to the extent that the operation of the Plan results in the issuance
           of Common Stock, such shares of Common Stock have been duly and
           validly authorized and, when issued in accordance with the terms set
           forth in the Registration Statement, will be legally issued, fully
           paid and nonassessable.

      I hereby consent to the filing of this opinion as an exhibit to the 
Registration Statement and to the reference to my opinion in the Registration 
Statement.

                                           Very truly yours,

                                           /s/ Stephen M. Piper

                                           Stephen M. Piper
                                           Assistant General Counsel
                                           Lockheed Martin Corporation


 
                                                                    EXHIBIT 23-A

              CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS


          We consent to the reference to our firm under the caption "Experts" 
and to the incorporation by reference in Post-Effective Amendment No. 1, on Form
S-8, to the Registration Statement (Form S-4 No. 33-57645) of Lockheed Martin
Corporation and in the related Joint Proxy Statement/Prospectus of Lockheed
Corporation, Martin Marietta Corporation and Lockheed Martin Corporation of: (a)
our report dated January 20, 1995, with respect to the consolidated financial
statements of Martin Marietta Corporation and subsidiaries for the year ended
December 31, 1994, included in its Current Report (Form 8-K), dated February 17,
1995, and (b) our report dated November 1, 1994, with respect to the
consolidated balance sheet of Lockheed Martin Corporation as of October 31,
1994, included in its Registration Statement (Form S-4 No. 33-57645), dated
February 9, 1995, both filed with the Securities and Exchange Commission.


                                                 ERNST & YOUNG LLP


Washington, D.C.
March 13, 1995


 
 
                                                                    EXHIBIT 23-B


              CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS

     We consent to the reference to our firm under the caption "Experts" and to
the incorporation by reference in Post-Effective Amendment No. 1, on Form S-8,
to the Registration Statement (Form S-4 No. 33-57645) of Lockheed Martin
Corporation and in the related Joint Proxy Statement/Prospectus of Lockheed
Corporation, Martin Marietta Corporation and Lockheed Martin Corporation of our
report dated January 31, 1995, with respect to the consolidated financial
statements of Lockheed Corporation for the year ended December 25, 1994,
included in its Current Report (Form 8-K), dated February 21, 1995, filed with
the Securities and Exchange Commission.

                                                               ERNST & YOUNG LLP

Los Angeles, California
March 13, 1995


 
 
                                                                    EXHIBIT 23-C

             CONSENT OF KPMG PEAT MARWICK LLP INDEPENDENT AUDITORS


The Board of Directors
General Electric Company:
The Board of Directors
Martin Marietta Corporation:

       We consent to the incorporation by reference in this Registration 
Statement on Form S-8 of Lockheed Martin Corporation of our report, dated 
February 3, 1993, relating to the consolidated financial statements of GE 
Aerospace Businesses as of December 31, 1992 and 1991 and for each of the years 
in the two-year period ended December 31, 1992, which report is incorporated by 
reference in the December 31, 1993 annual report on Form 10-K of Martin Marietta
Corporation, which is incorporated herein by reference.


Harrisburg, Pennsylvania
March 13, 1995



 

                                                                    EXHIBIT 23-D
 
                        CONSENT OF ARTHUR ANDERSEN LLP
                        INDEPENDENT PUBLIC ACCOUNTANTS

As independent public accountants, we hereby consent to the incorporation by 
reference in this registration statement on Form S-8 of our report dated January
20, 1994 on our audits of the combined financial statements of the General 
Dynamics Space Systems Group as of December 31, 1993 and 1992 and for each of 
the three years in the period ended December 31, 1993 included in the Martin 
Marietta Corporation's Form 8-K dated May 13, 1994, which is incorporated by 
reference into the Lockheed Martin Corporation registration statement on Form 
S-4 dated February 9, 1995.


                                                 ARTHUR ANDERSEN LLP


San Diego, California
March 13, 1995