Buck and the Preacher is a 1972 American Western film released by Columbia Pictures, written by Ernest Kinoy and directed by Sidney Poitier. Poitier also stars in the film alongside Harry Belafonte and Ruby Dee.

This is the first film Sidney Poitier directed. Vincent Canby of The New York Times said Poitier "showed a talent for easy, unguarded, rambunctious humor missing from his more stately movies".

This film broke Hollywood Western traditions by casting black actors as central characters and portraying both tension and solidarity between African Americans and Native Americans in the late 19th century. The notable blues musicians Sonny Terry, Brownie McGhee, and Don Frank Brooks performed in the film's soundtrack, composed by jazz great Benny Carter.