Robert Franklyn Overmyer (July 14, 1936 – March 22, 1996) was an American test pilot, Colonel in the United States Marine Corps and NASA astronaut. He was born in Lorain, Ohio, but considered Westlake, Ohio his hometown. Overmyer was selected by the United States Air Force as an astronaut for its Manned Orbiting Laboratory in 1966. Upon cancellation of this program in 1969, he became a NASA astronaut and served support crew duties for the Skylab program and Apollo-Soyuz Test Project. In 1976, he was assigned to the Space Shuttle program, and flew as Pilot on one 1982 mission and as Commander on a second in 1985. He was selected as a lead investigator into the Space Shuttle Challenger disaster, and retired from NASA in 1986.