Monte Walsh is a 1970 American Western film directed by cinematographer William A. Fraker starring Lee Marvin, Jeanne Moreau and Jack Palance. The name "Monte Walsh" is taken from the title of a 1963 western novel by Jack Schaefer, but the film has little to do with the plot of Schaefer's book. The film was set in Harmony, Arizona. The story has elements of a tragedy. The song played over the opening credits is "The Good Times Are Comin' " by Mama Cass, with music and lyrics by John Barry and Hal David.

Lee Marvin was an American film and television actor. Known for his bass voice and premature white hair, he is best remembered for playing hardboiled "tough guy" characters. Although initially typecast as the "heavy", he later gained prominence for portraying anti-heroes, such as Detective Lieutenant Frank Ballinger on the television series M Squad (1957–1960). Marvin's notable roles in film included Charlie Strom in The Killers (1964), Rico Fardan in The Professionals (1966), Major John Reisman in The Dirty Dozen (1967), Ben Rumson in Paint Your Wagon (1969), Walker in Point Blank (1967), and the Sergeant in The Big Red One (1980).