Murder on the Orient Express is a 1974 British mystery film directed by Sidney Lumet, produced by John Brabourne and Richard Goodwin, and based on the 1934 novel of the same name by Agatha Christie.

The film features the Belgian detective Hercule Poirot (Albert Finney), who is asked to investigate the murder of an American business tycoon aboard the Orient Express train. The suspects are portrayed by an all-star cast, including Lauren Bacall, Martin Balsam, Ingrid Bergman, Sean Connery, John Gielgud, Jean-Pierre Cassel, Vanessa Redgrave, Michael York, Rachel Roberts, Jacqueline Bisset, Anthony Perkins, Richard Widmark and Wendy Hiller. The screenplay is by Paul Dehn.

The film was a commercial and critical success. Bergman won the Academy Award for Best Supporting Actress, and the film received five other nominations at the 47th Academy Awards: Best Actor (Finney), Best Adapted Screenplay, Best Original Score, Best Cinematography, and Best Costume Design.