The Secret of the Submarine
- Tahun: 1915
- Negara: United States of America
- Genre: Action, Adventure
- Studio: American Film Manufacturing Company
- Kata kunci: submarine, silent film, movie serial, lost film
- Pengarah: George L. Sargent
- Pelakon: Juanita Hansen, Tom Chatterton, Hylda Hollis, Lamar Johnstone, George Clancey, William Tedmarsh
