Thunder Afloat
- taona: 1939
- Firenena: United States of America
- Genre: Action, Drama, Romance, War
- Studio: Metro-Goldwyn-Mayer
- Keyword: world war i, tugboat
- tale: George B. Seitz
- Cast: Wallace Beery, Chester Morris, Virginia Grey, Douglass Dumbrille, Carl Esmond, Clem Bevans