The Secret of the Submarine
- Joer: 1915
- Land: United States of America
- Genre: Action, Adventure
- Studio: American Film Manufacturing Company
- Schlësselwuert: submarine, silent film, movie serial, lost film
- Direkter: George L. Sargent
- Besetzung: Juanita Hansen, Tom Chatterton, Hylda Hollis, Lamar Johnstone, George Clancey, William Tedmarsh