There were seven castaways on the American sitcom "Gilligan's Island".
"Gilligan's Island" was a popular American sitcom that aired from 1964 to 1967. The show was about seven people who become stranded on a deserted island after their boat is shipwrecked. The castaways included the skipper, Jonas Grumby (Alan Hale Jr.), his first mate, Gilligan (Bob Denver), the millionaire, Thurston Howell III (Jim Backus), his wife, Lovey Howell (Natalie Schafer), the movie star, Ginger Grant (Tina Louise), the professor, Roy Hinkley (Russell Johnson), and Mary Ann Summers (Dawn Wells). The show has since become a classic of American television and is still popular today through syndication and reruns.