Butch Cassidy and the Sundance Kid is a 1969 American Western buddy film directed by George Roy Hill and written by William Goldman. Based loosely on fact, the film tells the story of Wild West outlaws Robert LeRoy Parker, known as Butch Cassidy, and his partner Harry Longabaugh, the "Sundance Kid", who are on the run from a crack US posse after a string of train robberies. The pair and Sundance's lover, Etta Place, flee to Bolivia to escape the posse.

The buddy film is a subgenre of romantic comedy, a combination of the romance, adventure and comedy film in which two people, bonded through some kind of affection or love for each other, go on an adventure, mission, or road trip. The two typically are males with contrasting personalities. The contrast is sometimes accentuated by an ethnic difference between the two. The buddy film is commonplace in Western cinema; unlike some other film genres, it endured through the 20th century with different pairings and different themes.