I, Monster
- Godina: 1971
- Country: United Kingdom
- Žanr: Horror, Science Fiction
- Studio: Amicus Productions, British Lion Film Corporation
- Ključna riječ: based on novel or book, mad scientist, victorian england, murder, doctor, jekyll and hyde, split personality, killing a cat
- Direktor: Stephen Weeks
- Uloge: Christopher Lee, Peter Cushing, Mike Raven, Richard Hurndall, George Merritt, Kenneth J. Warren