The Exorcist is a 1973 American supernatural horror film directed by William Friedkin from a screenplay by William Peter Blatty, based on his 1971 novel. The film stars Ellen Burstyn, Max von Sydow, Jason Miller, and Linda Blair, and follows the demonic possession of a young girl and her mother's attempt to rescue her through an exorcism by two Catholic priests.

Supernatural horror film is a film genre that combines aspects of supernatural film and horror film. Supernatural occurrences in such films often include ghosts and demons, and many supernatural horror films have elements of religion. Common themes in the genre are the afterlife, the Devil, and demonic possession. Not all supernatural horror films focus on religion, and they can have "more vivid and gruesome violence".