Exhibit 24

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, David A. Dedman and Matthew C. Dow, and each of them, jointly and severally, his or her lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, including, but not limited to, that listed below, to execute and file, or cause to be filed with the Securities and Exchange Commission (“Commission”) one or more registration statements on Form S-8, or amendments thereto, with exhibits and other documents in connection therewith, for the purpose of registering under the Securities Act of 1933, as amended, (the “Securities Act”) shares of Lockheed Martin common stock and other securities to be issued under the Lockheed Martin Corporation 2011 Incentive Performance Award Plan, and all matters required by the Commission in connection with such registration statements under the Securities Act, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite or necessary to be done as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

/s/ Nolan D. Archibald

NOLAN D. ARCHIBALD

Director

July 21, 2011

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, David A. Dedman and Matthew C. Dow, and each of them, jointly and severally, his or her lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, including, but not limited to, that listed below, to execute and file, or cause to be filed with the Securities and Exchange Commission (“Commission”) one or more registration statements on Form S-8, or amendments thereto, with exhibits and other documents in connection therewith, for the purpose of registering under the Securities Act of 1933, as amended, (the “Securities Act”) shares of Lockheed Martin common stock and other securities to be issued under the Lockheed Martin Corporation 2011 Incentive Performance Award Plan, and all matters required by the Commission in connection with such registration statements under the Securities Act, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite or necessary to be done as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

/s/ Rosalind G. Brewer

Rosalind G. Brewer

Director

July 21, 2011

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, David A. Dedman and Matthew C. Dow, and each of them, jointly and severally, his or her lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, including, but not limited to, that listed below, to execute and file, or cause to be filed with the Securities and Exchange Commission (“Commission”) one or more registration statements on Form S-8, or amendments thereto, with exhibits and other documents in connection therewith, for the purpose of registering under the Securities Act of 1933, as amended, (the “Securities Act”) shares of Lockheed Martin common stock and other securities to be issued under the Lockheed Martin Corporation 2011 Incentive Performance Award Plan, and all matters required by the Commission in connection with such registration statements under the Securities Act, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite or necessary to be done as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

/s/ David B. Burritt

DAVID B. BURRITT

Director

July 20, 2011

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, David A. Dedman and Matthew C. Dow, and each of them, jointly and severally, his or her lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, including, but not limited to, that listed below, to execute and file, or cause to be filed with the Securities and Exchange Commission (“Commission”) one or more registration statements on Form S-8, or amendments thereto, with exhibits and other documents in connection therewith, for the purpose of registering under the Securities Act of 1933, as amended, (the “Securities Act”) shares of Lockheed Martin common stock and other securities to be issued under the Lockheed Martin Corporation 2011 Incentive Performance Award Plan, and all matters required by the Commission in connection with such registration statements under the Securities Act, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite or necessary to be done as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

/s/ James O. Ellis, Jr.

JAMES O. ELLIS, JR.

Director

July 20, 2011

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, David A. Dedman and Matthew C. Dow, and each of them, jointly and severally, his or her lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, including, but not limited to, that listed below, to execute and file, or cause to be filed with the Securities and Exchange Commission (“Commission”) one or more registration statements on Form S-8, or amendments thereto, with exhibits and other documents in connection therewith, for the purpose of registering under the Securities Act of 1933, as amended, (the “Securities Act”) shares of Lockheed Martin common stock and other securities to be issued under the Lockheed Martin Corporation 2011 Incentive Performance Award Plan, and all matters required by the Commission in connection with such registration statements under the Securities Act, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite or necessary to be done as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

/s/ Thomas J. Falk

THOMAS J. FALK

Director

July 25, 2011

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, David A. Dedman and Matthew C. Dow, and each of them, jointly and severally, his or her lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, including, but not limited to, that listed below, to execute and file, or cause to be filed with the Securities and Exchange Commission (“Commission”) one or more registration statements on Form S-8, or amendments thereto, with exhibits and other documents in connection therewith, for the purpose of registering under the Securities Act of 1933, as amended, (the “Securities Act”) shares of Lockheed Martin common stock and other securities to be issued under the Lockheed Martin Corporation 2011 Incentive Performance Award Plan, and all matters required by the Commission in connection with such registration statements under the Securities Act, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite or necessary to be done as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

/s/ Gwendolyn S. King

GWENDOLYN S. KING

Director

July 21, 2011

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, David A. Dedman and Matthew C. Dow, and each of them, jointly and severally, his or her lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, including, but not limited to, that listed below, to execute and file, or cause to be filed with the Securities and Exchange Commission (“Commission”) one or more registration statements on Form S-8, or amendments thereto, with exhibits and other documents in connection therewith, for the purpose of registering under the Securities Act of 1933, as amended, (the “Securities Act”) shares of Lockheed Martin common stock and other securities to be issued under the Lockheed Martin Corporation 2011 Incentive Performance Award Plan, and all matters required by the Commission in connection with such registration statements under the Securities Act, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite or necessary to be done as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

/s/ James M. Loy

JAMES M. LOY

Director

July 26, 2011

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, David A. Dedman and Matthew C. Dow, and each of them, jointly and severally, his or her lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, including, but not limited to, that listed below, to execute and file, or cause to be filed with the Securities and Exchange Commission (“Commission”) one or more registration statements on Form S-8, or amendments thereto, with exhibits and other documents in connection therewith, for the purpose of registering under the Securities Act of 1933, as amended, (the “Securities Act”) shares of Lockheed Martin common stock and other securities to be issued under the Lockheed Martin Corporation 2011 Incentive Performance Award Plan, and all matters required by the Commission in connection with such registration statements under the Securities Act, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite or necessary to be done as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

/s/ Douglas H. McCorkindale

DOUGLAS H. McCORKINDALE

Director

July 25, 2011

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, David A. Dedman and Matthew C. Dow, and each of them, jointly and severally, his or her lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, including, but not limited to, that listed below, to execute and file, or cause to be filed with the Securities and Exchange Commission (“Commission”) one or more registration statements on Form S-8, or amendments thereto, with exhibits and other documents in connection therewith, for the purpose of registering under the Securities Act of 1933, as amended, (the “Securities Act”) shares of Lockheed Martin common stock and other securities to be issued under the Lockheed Martin Corporation 2011 Incentive Performance Award Plan, and all matters required by the Commission in connection with such registration statements under the Securities Act, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite or necessary to be done as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

/s/ Joseph W. Ralston

JOSEPH W. RALSTON

Director

July 26, 2011

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, David A. Dedman and Matthew C. Dow, and each of them, jointly and severally, his or her lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, including, but not limited to, that listed below, to execute and file, or cause to be filed with the Securities and Exchange Commission (“Commission”) one or more registration statements on Form S-8, or amendments thereto, with exhibits and other documents in connection therewith, for the purpose of registering under the Securities Act of 1933, as amended, (the “Securities Act”) shares of Lockheed Martin common stock and other securities to be issued under the Lockheed Martin Corporation 2011 Incentive Performance Award Plan, and all matters required by the Commission in connection with such registration statements under the Securities Act, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite or necessary to be done as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

/s/ Anne Stevens

ANNE STEVENS

Director

July 25, 2011

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, David A. Dedman and Matthew C. Dow, and each of them, jointly and severally, his or her lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, including, but not limited to, that listed below, to execute and file, or cause to be filed with the Securities and Exchange Commission (“Commission”) one or more registration statements on Form S-8, or amendments thereto, with exhibits and other documents in connection therewith, for the purpose of registering under the Securities Act of 1933, as amended, (the “Securities Act”) shares of Lockheed Martin common stock and other securities to be issued under the Lockheed Martin Corporation 2011 Incentive Performance Award Plan, and all matters required by the Commission in connection with such registration statements under the Securities Act, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite or necessary to be done as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

/s/ Robert J. Stevens

ROBERT J. STEVENS

Chairman, Chief Executive Officer, and Director

July 27, 2011

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, David A. Dedman and Matthew C. Dow, and each of them, jointly and severally, his or her lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, including, but not limited to, that listed below, to execute and file, or cause to be filed with the Securities and Exchange Commission (“Commission”) one or more registration statements on Form S-8, or amendments thereto, with exhibits and other documents in connection therewith, for the purpose of registering under the Securities Act of 1933, as amended, (the “Securities Act”) shares of Lockheed Martin common stock and other securities to be issued under the Lockheed Martin Corporation 2011 Incentive Performance Award Plan, and all matters required by the Commission in connection with such registration statements under the Securities Act, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite or necessary to be done as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

/s/ Bruce L. Tanner

BRUCE L. TANNER

Executive Vice President and Chief Financial Officer

July 27, 2011

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, David A. Dedman and Matthew C. Dow, and each of them, jointly and severally, his or her lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, including, but not limited to, that listed below, to execute and file, or cause to be filed with the Securities and Exchange Commission (“Commission”) one or more registration statements on Form S-8, or amendments thereto, with exhibits and other documents in connection therewith, for the purpose of registering under the Securities Act of 1933, as amended, (the “Securities Act”) shares of Lockheed Martin common stock and other securities to be issued under the Lockheed Martin Corporation 2011 Incentive Performance Award Plan, and all matters required by the Commission in connection with such registration statements under the Securities Act, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite or necessary to be done as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

/s/ Christopher J. Gregoire

CHRISTOPHER J. GREGOIRE

Vice President and Controller

(Chief Accounting Officer)

July 27, 2011