Major General Carroll W. McColpin (1914–2003) was a United States Air Force officer who served during World War II, and during the Cold War. Prior to the United States entry into World War II, in November 1940, he volunteered for duty with the Royal Air Force and was commissioned a pilot officer (second lieutenant) in the RAF before transferring to the United States Army Air Forces in the grade of major, at London, England, in September 1942.