Madhouse
- Jaar: 1981
- Land: Italy, United States of America
- Genre: Horror
- Studio: Overseas FilmGroup
- Sleutelwoord: birthday, psychopath, twin sister, animal attack, rottweiler, revenge, mental institution, rabid dog, video nasty, female teacher
- Direkteur: Ovidio G. Assonitis
- Gooi: Trish Everly, Allison Biggers, Michael MacRae, Dennis Robertson, Morgan Hart, Edith Ivey