The Ninth Configuration
- Taon: 1980
- Bansa: United States of America
- Genre: Drama, Thriller, Comedy, Mystery, Horror
- Studio: Ninth Configuration, United Film Distribution Company (UFDC), Warner Bros. Pictures
- Keyword: vietnam war, army, post-traumatic stress disorder (ptsd), based on novel or book, supernatural, dark comedy, castle, insane asylum, religion, astronaut, crucifix, psychosis, combat fatigue, absurdism
- Direktor: William Peter Blatty
- Cast: Stacy Keach, Scott Wilson, Jason Miller, Ed Flanders, Neville Brand, George DiCenzo