The Fan is a 1981 American psychological thriller film directed by Edward Bianchi and starring Lauren Bacall, Michael Biehn, James Garner, and Maureen Stapleton. The plot follows a famous stage and film actress named Sally Ross (Bacall) who is stalked by a violent, deranged fan (Biehn), who begins killing those around her. The screenplay by Priscilla Chapman and John Hartwell was based on the 1977 novel of the same title by Bob Randall.

Betty Joan Perske, professionally known as Lauren Bacall, was an American actress. She was named the 20th-greatest female star of classic Hollywood cinema by the American Film Institute and received an Academy Honorary Award in 2009 in recognition of her contribution to the Golden Age of motion pictures. She was known for her alluring, sultry presence and her distinctive, husky voice. Bacall was one of the last surviving major stars from the Golden Age of Hollywood cinema.