Psycho III
- Blwyddyn: 1986
- Gwlad: United States of America
- Genre: Horror, Mystery, Thriller
- Stiwdio: Universal Pictures
- Allweddair: depression, prostitute, schizophrenia, nun, psychopath, gore, sequel, murder, cross dressing, slasher, corpse, mental illness
- Cyfarwyddwr: Anthony Perkins
- Cast: Anthony Perkins, Diana Scarwid, Jeff Fahey, Roberta Maxwell, Hugh Gillin, Lee Garlington