Exhibit 15.1
Acknowledgment of Ernst & Young LLP,
Independent Registered Public Accounting Firm
Board of Directors
Lockheed Martin Corporation
We are aware of the incorporation by reference in the Registration Statement (FormS-3) and related Prospectus of Lockheed Martin Corporation for the registration of debt securities of our reports dated April 26, 2017 and July 20, 2017 relating to the unaudited consolidated interim financial statements of Lockheed Martin Corporation that are included in its Forms10-Q for the quarters ended March 26, 2017 and June 25, 2017.
/s/ Ernst & Young LLP
Tysons, Virginia
July 20, 2017