Yul Brynner as Chris Adams

Eli Wallach as Calvera

Steve McQueen as Vin

Charles Bronson as Bernardo O'Reilly

Robert Vaughn as Lee

Brad Dexter as Harry Luck

James Coburn as Britt

Horst Buchholz as Chico

Jorge Martínez de Hoyos as Hilario

Vladimir Sokoloff as Old man

Rosenda Monteros as Petra

Rico Alaniz as Sotero

Pepe Hern as Tomas

Natividad Vacío as Tomas

Mario Navarro as Boy with O'Reilly

Danny Bravo as (uncredited)

John A. Alonzo as Miguel

Enrique Lucero as Villager

Alex Montoya as (uncredited)

Robert J. Wilke as Wallace

Val Avery as Henry

Whit Bissell as Chamlee

Bing Russell as Robert

Joseph Ruskin as Flynn

Victor French as Front Office Clerk

Jim Davis as Gunman at Boot Hill

José Chávez as Rafael

Valentin de Vargas as Calvera Henchman (uncredited)

Larry Duran as Calvera Henchman (uncredited)

Roberto Contreras as Villager (uncredited)