SOS Coast Guard
- År: 1937
- Land: United States of America
- Genre: Sci-fi, Action
- Studio: Republic Pictures
- Nøgleord: invention, coast guard, mad scientist, murder, criminal gang, movie serial, foreign agent, disintegrating gas, female reporter, avenging brother
- Direktør: William Witney, Alan James
- Cast: Bela Lugosi, Ralph Byrd, Maxine Doyle, Richard Alexander, Lee Ford, Herbert Rawlinson