Goodyear Aerospace Corporation (GAC) was the aerospace and defense subsidiary of the Goodyear Tire and Rubber Company. The company was originally operated as a division within Goodyear as the Goodyear Zeppelin Corporation, part of a joint project with Luftschiffbau Zeppelin, leading to the development of rigid airships in the United States. As part of the failing relationship between the US and Germany in the era prior to World War II, the division was spun off as Goodyear Aircraft Company in 1939. The company opened a new factory in Arizona in 1941 which produced subassemblies, including subcontracted airframe construction and the design of the Goodyear F2G Corsair and Goodyear Duck.

In the post-war era, the division began to diversify and made major contributions to the development of synthetic aperture radar. In 1963 they became Goodyear Aerospace, with major product lines in radar, aircraft canopies, bulletproof glass, a number of spacecraft related products, and the unique Goodyear Inflatoplane. A 1986 hostile takeover attempt of the parent company by James Goldsmith led to a massive restructuring to build capital to buy Goldsmith out. Goodyear Aerospace was sold to Loral in 1987, which in turn sold their non-satellite operations with the defense products purchased by Lockheed Martin in 1993.