Robert Preston

as Mike Finnegan

as Centauri

as Alex Dennison

as Carroll "Toddy" Todd

as Dr. Irving Finegarten

as Big Ed Bookman

as Beauregard Jackson Pickett Burnside

as Joseph Dobbs

as Ace Bonner

as Jay Follet

as Roger Morgan

as Harold Hill

as Rubin Flood

as Col. Frank Marston

as Joe Walter

as Matthew Fowler

as John Graham

as James Cloud ('Kid Wichita')

as David Boothe

as Brad Brady

as Murray Sinclair

as Tate Riling

as Francis Macomber

as Pvt. Joe Doyle

as Det. Michael Crane

as Dan Cutler

as Ronnie Logan

as Digby Geste

as Dick Allen