Rock Hudson as Dana Stribling

Kirk Douglas as Brendan 'Bren' O'Malley

Dorothy Malone as Belle Breckenridge

Joseph Cotten as John Breckenridge

Carol Lynley as Melissa 'Missy' Breckenridge

Neville Brand as Frank Hobbs

Regis Toomey as Milton Wing

James Westmoreland as Julesburg Kid

Adam Williams as Calverton

Jack Elam as Ed Hobbs

John Shay as Bowman

Gregorio Acosta as Singing ranch hand (uncredited)

Manuel Alvarado as Bartender saloon (uncredited)

José Chávez as Man at Cock Fight (uncredited)

Arturo Fernández as Man in saloon (uncredited)

Peter Helm as Man in saloon (uncredited)

Regino Herrera as Man in saloon (uncredited)

Jackboy as Dog (uncredited)

Vicente Lara as Man in saloon (uncredited)

Margarito Luna as Jose (uncredited)

Moreno López as Man in saloon (uncredited)

Rubén Márquez as Man in saloon (uncredited)

Amelia Rivera as Woman in saloon (uncredited)

Ángela Rodríguez as Woman shouts out in saloon (uncredited)

José Torvay as Rosario (uncredited)

Jorge Treviño as Mexican trader (uncredited)

Manuel Vergara 'Manver' as Man at Cock Fight (uncredited)

Isabel Vázquez as Old woman in trading store (uncredited)