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