Rio Conchos is a 1964 American Cinemascope Western film directed by Gordon Douglas and starring Richard Boone, Stuart Whitman, Anthony Franciosa, Edmond O'Brien, and in his motion picture debut, Jim Brown, based on Clair Huffaker's novel "Guns of Rio Conchos" published in 1958.
Huffaker's novel is reminiscent of the John Wayne films The Comancheros (for which Huffaker co-wrote the screenplay) and The Searchers. The main female role, played by Wende Wagner in a black wig, has no English dialogue. Rio Conchos was filmed in Moab, Utah, though the Conchos River and most of the action of the film takes place in Mexico.