The Entity is a 1982 American supernatural horror film directed by Sidney J. Furie, and written by Frank De Felitta, who adapted his 1978 novel of the same name. The film stars Barbara Hershey as a single mother in Los Angeles who is raped and tormented by an invisible assailant.

Like the novel, the film is based on the 1974 case of Doris Bither, a woman who claimed to have been repeatedly sexually assaulted by an invisible entity, and who was observed by doctoral students at the University of California, Los Angeles.

Despite being filmed and planned for a release in 1981, the movie was not released in worldwide theaters until September 1982 and February 1983 in the United States.