Hangar 18 (conspiracy theory)

In UFO conspiracy theories, "Hangar 18" is the name given to a building that allegedly contained UFO debris or alien bodies. The name was popularized by conspiracy theorist Robert Spencer Carr in 1974, who claimed the hangar was located at Wright-Patterson Air Force Base near Dayton, Ohio; in actuality, no such building exists.

In 1980, a film titled Hangar 18 was released, loosely based on Carr's stories.