Clarence Linden Crabbe II (/ˈkræb/; February 7, 1908 – April 23, 1983), commonly known by his stage name Buster Crabbe, was an American competitive swimmer and movie actor. He won the 1932 Olympic gold medal for 400-meter freestyle swimming event before breaking into acting. He starred in a number of popular films in the 1930s and 1940s. He also played the title role in the serials Flash Gordon and Buck Rogers.