The Cider House Rules is a 1999 American drama film directed by Lasse Hallström from a screenplay by John Irving, based on Irving's 1985 novel. Its story follows Homer Wells, who lives in a World War II–era Maine orphanage run by a doctor who trained him, and his journey after leaving the orphanage. The film stars Tobey Maguire, Charlize Theron, Delroy Lindo, Paul Rudd, Michael Caine, Jane Alexander, Kathy Baker, Kieran Culkin, Heavy D, Kate Nelligan, and Erykah Badu.

The film was produced by Miramax Films and FilmColony, and it had its world premiere at the 56th Venice International Film Festival. It was given a limited release by Miramax Films in the United States on December 10, 1999, followed by a wide release on January 7, 2000. It grossed $110,098 in its opening weekend and $88.5 million worldwide against a budget of $24 million. It was positively reviewed and has a 71% approval rating on Rotten Tomatoes.

The film won two Academy Awards: Irving won the Academy Award for Best Adapted Screenplay, and Michael Caine won his second Academy Award for Best Supporting Actor. It was nominated for the Academy Award for Best Picture, along with four other nominations at the 72nd Academy Awards. Irving documented his involvement in bringing the novel to the screen in his book My Movie Business.