Monstroid
- Annu: 1980
- Paese: United States of America
- Genre: Horror, Science Fiction
- Studio: Academy International
- Parolla chjave: monster, based on true story, water pollution, lake monster
- Direttore: Kenneth Hartford, Herbert L. Strock
- Cast: James Mitchum, John Carradine, Philip Carey, Anthony Eisley, Andrea Hartford, Glen Hartford