Sergeant York is a 1941 American biographical film about the life of Alvin C. York, one of the most decorated American soldiers of World War I. Directed by Howard Hawks, the film stars Gary Cooper in the title role, and was based on York's diary, as edited by Tom Skeyhill, and adapted by Harry Chandlee, Abem Finkel, John Huston, Howard E. Koch, and Sam Cowan (uncredited). York refused, several times, to authorize a film version of his life story, but finally yielded to persistent efforts to finance the creation of an interdenominational Bible school. The story that York insisted on Cooper for the title role comes from a telegram that producer Jesse L. Lasky wrote to Cooper pleading with him to accept the part, to which he signed York's name.

Sergeant York was a critical and commercial success, and became the highest-grossing film of 1941. Cooper went on to win the Academy Award for Best Actor for his performance, while the film also won Best Film Editing and was nominated in nine other categories, including Best Picture, Director, Supporting Actor (Walter Brennan), and Supporting Actress (Margaret Wycherly). The American Film Institute ranked the film 57th in its 100 most inspirational American movies list; it also rated Alvin York 35th in its list of the top 50 heroes in American cinema. In 2008, Sergeant York was selected for preservation in the United States National Film Registry by the Library of Congress as being "culturally, historically, or aesthetically significant".