Horror Island is a 1941 American mystery and horror film directed by George Waggner. It was based on the short story "Terror of the South Seas" by Alex Gottlieb. It stars Dick Foran, Peggy Moran, Leo Carrillo, Eddie Parker, Dale Van Sickle, John Eldredge, Lewis Howard, Hobart Cavanaugh, Iris Adrian and Fuzzy Knight. Foy Van Dolsen plays the monstrous villain "Panama Pete", alias "The Phantom". The plot has assorted colorful characters going to a mysterious island to seek a pirate's hidden fortune.

The film cost $93,000 and was made between filming on March 3, 1941. It was made to be the second-half of a double feature with Man-Made Monster. On its release it was considered mediocre by critics, recommending it to juvenile audiences.