Exhibit 24

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, and David A. Dedman, each of them, jointly and severally, his lawful attorney-in-fact and agent, with full power of substitution, for him and in his 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 exhibits thereto and other documents in connection therewith, the Lockheed Martin Corporation Annual Report on Form 10-K for the fiscal year ended December 31, 2010 (“Form 10-K”), with the Securities and Exchange Commission (“Commission”) under the Securities Exchange Act of 1934, as amended, and amendments thereto, with exhibits and other documents in connection therewith, and all matters required by the Commission in connection with such Form 10-K.

Further, the undersigned grants 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 might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or their substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

/s/ E. C. “Pete” Aldridge, JR.

E. C. “PETE” ALDRIDGE, JR.

Director

February 24, 2011

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, and David A. Dedman, each of them, jointly and severally, his lawful attorney-in-fact and agent, with full power of substitution, for him and in his 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 exhibits thereto and other documents in connection therewith, the Lockheed Martin Corporation Annual Report on Form 10-K for the fiscal year ended December 31, 2010 (“Form 10-K”), with the Securities and Exchange Commission (“Commission”) under the Securities Exchange Act of 1934, as amended, and amendments thereto, with exhibits and other documents in connection therewith, and all matters required by the Commission in connection with such Form 10-K.

Further, the undersigned grants 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 might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or their substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

/s/ Nolan D. Archibald

NOLAN D. ARCHIBALD

Director

February 22, 2011

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, and David A. Dedman, each of them, jointly and severally, his lawful attorney-in-fact and agent, with full power of substitution, for him and in his 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 exhibits thereto and other documents in connection therewith, the Lockheed Martin Corporation Annual Report on Form 10-K for the fiscal year ended December 31, 2010 (“Form 10-K”), with the Securities and Exchange Commission (“Commission”) under the Securities Exchange Act of 1934, as amended, and amendments thereto, with exhibits and other documents in connection therewith, and all matters required by the Commission in connection with such Form 10-K.

Further, the undersigned grants 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 might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or their substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

/s/ David B. Burritt

DAVID B. BURRITT

Director

February 24, 2011

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, and David A. Dedman, each of them, jointly and severally, his lawful attorney-in-fact and agent, with full power of substitution, for him and in his 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 exhibits thereto and other documents in connection therewith, the Lockheed Martin Corporation Annual Report on Form 10-K for the fiscal year ended December 31, 2010 (“Form 10-K”), with the Securities and Exchange Commission (“Commission”) under the Securities Exchange Act of 1934, as amended, and amendments thereto, with exhibits and other documents in connection therewith, and all matters required by the Commission in connection with such Form 10-K.

Further, the undersigned grants 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 might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or their substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

/s/ James O. Ellis, JR.

JAMES O. ELLIS, JR.

Director

February 24, 2011

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, and David A. Dedman, each of them, jointly and severally, his lawful attorney-in-fact and agent, with full power of substitution, for him and in his 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 exhibits thereto and other documents in connection therewith, the Lockheed Martin Corporation Annual Report on Form 10-K for the fiscal year ended December 31, 2010 (“Form 10-K”), with the Securities and Exchange Commission (“Commission”) under the Securities Exchange Act of 1934, as amended, and amendments thereto, with exhibits and other documents in connection therewith, and all matters required by the Commission in connection with such Form 10-K.

Further, the undersigned grants 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 might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or their substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

/s/ Thomas J. Falk

THOMAS J. FALK

Director

February 24, 2011

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, and David A. Dedman, each of them, jointly and severally, her lawful attorney-in-fact and agent, with full power of substitution, for her and in 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 exhibits thereto and other documents in connection therewith, the Lockheed Martin Corporation Annual Report on Form 10-K for the fiscal year ended December 31, 2010 (“Form 10-K”), with the Securities and Exchange Commission (“Commission”) under the Securities Exchange Act of 1934, as amended, and amendments thereto, with exhibits and other documents in connection therewith, and all matters required by the Commission in connection with such Form 10-K.

Further, the undersigned grants 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 she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or their substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

/s/ Gwendolyn S. King

GWENDOLYN S. KING

Director

February 24, 2011

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, and David A. Dedman, each of them, jointly and severally, his lawful attorney-in-fact and agent, with full power of substitution, for him and in his 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 exhibits thereto and other documents in connection therewith, the Lockheed Martin Corporation Annual Report on Form 10-K for the fiscal year ended December 31, 2010 (“Form 10-K”), with the Securities and Exchange Commission (“Commission”) under the Securities Exchange Act of 1934, as amended, and amendments thereto, with exhibits and other documents in connection therewith, and all matters required by the Commission in connection with such Form 10-K.

Further, the undersigned grants 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 might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or their substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

/s/ James M. Loy

JAMES M. LOY

Director

February 24, 2011

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, and David A. Dedman, each of them, jointly and severally, his lawful attorney-in-fact and agent, with full power of substitution, for him and in his 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 exhibits thereto and other documents in connection therewith, the Lockheed Martin Corporation Annual Report on Form 10-K for the fiscal year ended December 31, 2010 (“Form 10-K”), with the Securities and Exchange Commission (“Commission”) under the Securities Exchange Act of 1934, as amended, and amendments thereto, with exhibits and other documents in connection therewith, and all matters required by the Commission in connection with such Form 10-K.

Further, the undersigned grants 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 might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or their substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

/s/ Douglas H. McCorkindale

DOUGLAS H. McCORKINDALE

Director

February 24, 2011

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, and David A. Dedman, each of them, jointly and severally, his lawful attorney-in-fact and agent, with full power of substitution, for him and in his 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 exhibits thereto and other documents in connection therewith, the Lockheed Martin Corporation Annual Report on Form 10-K for the fiscal year ended December 31, 2010 (“Form 10-K”), with the Securities and Exchange Commission (“Commission”) under the Securities Exchange Act of 1934, as amended, and amendments thereto, with exhibits and other documents in connection therewith, and all matters required by the Commission in connection with such Form 10-K.

Further, the undersigned grants 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 might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or their substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

/s/ Joseph W. Ralston

JOSEPH W. RALSTON

Director

February 24, 2011

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, and David A. Dedman, each of them, jointly and severally, her lawful attorney-in-fact and agent, with full power of substitution, for her and in 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 exhibits thereto and other documents in connection therewith, the Lockheed Martin Corporation Annual Report on Form 10-K for the fiscal year ended December 31, 2010 (“Form 10-K”), with the Securities and Exchange Commission (“Commission”) under the Securities Exchange Act of 1934, as amended, and amendments thereto, with exhibits and other documents in connection therewith, and all matters required by the Commission in connection with such Form 10-K.

Further, the undersigned grants 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 she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or their substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

/s/ Anne Stevens

ANNE STEVENS

Director

February 24, 2011

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, and David A. Dedman, each of them, jointly and severally, his lawful attorney-in-fact and agent, with full power of substitution, for him and in his 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 exhibits thereto and other documents in connection therewith, the Lockheed Martin Corporation Annual Report on Form 10-K for the fiscal year ended December 31, 2010 (“Form 10-K”), with the Securities and Exchange Commission (“Commission”) under the Securities Exchange Act of 1934, as amended, and amendments thereto, with exhibits and other documents in connection therewith, and all matters required by the Commission in connection with such Form 10-K.

Further, the undersigned grants 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 might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or their 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

February 24, 2011

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, and David A. Dedman, each of them, jointly and severally, his lawful attorney-in-fact and agent, with full power of substitution, for him and in his 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 exhibits thereto and other documents in connection therewith, the Lockheed Martin Corporation Annual Report on Form 10-K for the fiscal year ended December 31, 2010 (“Form 10-K”), with the Securities and Exchange Commission (“Commission”) under the Securities Exchange Act of 1934, as amended, and amendments thereto, with exhibits and other documents in connection therewith, and all matters required by the Commission in connection with such Form 10-K.

Further, the undersigned grants 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 might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or their 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

February 24, 2011

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, and David A. Dedman, each of them, jointly and severally, his lawful attorney-in-fact and agent, with full power of substitution, for him and in his 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 exhibits thereto and other documents in connection therewith, the Lockheed Martin Corporation Annual Report on Form 10-K for the fiscal year ended December 31, 2010 (“Form 10-K”), with the Securities and Exchange Commission (“Commission”) under the Securities Exchange Act of 1934, as amended, and amendments thereto, with exhibits and other documents in connection therewith, and all matters required by the Commission in connection with such Form 10-K.

Further, the undersigned grants 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 might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or their substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

/s/ Christopher E. Kubasik

CHRISTOPHER E. KUBASIK

President and Chief Operating Officer

February 24, 2011

POWER OF ATTORNEY

LOCKHEED MARTIN CORPORATION

The undersigned hereby constitutes Maryanne R. Lavan, Marian S. Block, and David A. Dedman, each of them, jointly and severally, his lawful attorney-in-fact and agent, with full power of substitution, for him and in his 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 exhibits thereto and other documents in connection therewith, the Lockheed Martin Corporation Annual Report on Form 10-K for the fiscal year ended December 31, 2010 (“Form 10-K”), with the Securities and Exchange Commission (“Commission”) under the Securities Exchange Act of 1934, as amended, and amendments thereto, with exhibits and other documents in connection therewith, and all matters required by the Commission in connection with such Form 10-K.

Further, the undersigned grants 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 might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and each of them, or their 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)

February 24, 2011