Monstroid
- Joer: 1980
- Land: United States of America
- Genre: Horror, Science Fiction
- Studio: Academy International
- Schlësselwuert: monster, based on true story, water pollution, lake monster
- Direkter: Kenneth Hartford, Herbert L. Strock
- Besetzung: James Mitchum, John Carradine, Philip Carey, Anthony Eisley, Andrea Hartford, Glen Hartford