Lockheed Martin Corporation is an American defense and aerospace manufacturer headquartered in North Bethesda, Maryland. It was formed in 1995 through the merger of Lockheed Corporation and Martin Marietta.

The company has four divisions: Aeronautics; Missiles and Fire Control; Rotary and Mission Systems; and Space. Its military aircraft include the F-35 fighter. Sikorsky, a Lockheed Martin subsidiary, manufactures UH-60M Black Hawk helicopters.