Gary Cooper

Beau Geste

Ray Milland

John Geste

Robert Preston

Digby Geste

Brian Donlevy

Sergeant Markoff

Susan Hayward

Isobel Rivers

J. Carrol Naish

Rasinoff

Albert Dekker

Schwartz

Broderick Crawford

Hank Miller

Charles Barton

Buddy McMonigal

James Stephenson

Major Henri de Beaujolais

Heather Thatcher

Lady Patricia Brandon

James Burke

Lieutenant Dufour

G.P. Huntley

Augustus Brandon

Harold Huber

Voisin

Donald O'Connor

Beau Geste (as a Child)

Billy Cook

John Geste (as a Child)

Martin Spellman

Digby Geste (as a Child)

Ann Gillis

Isobel Rivers (as a Child)

David Holt

Augustus Brandon (as a Child)

Harvey Stephens

Lieutenant Martin

Stanley Andrews

Maris

Harry Woods

Renoir

Arthur Aylesworth

Renault, a deserter

Henry Brandon

Renouf, another deserter

Barry Macollum

Krenke

Ronald R. Rondell

A Bugler

Joseph E. Bernard

Legionnaire (uncredited)

George Chandler

Legionnaire Cordier (uncredited)

Joseph William Cody

Legionnaire (uncredited)

Joe Colling

Trumpeter O. Leo (uncredited)

Gino Corrado

Recruit Wearing Top Hat (uncredited)

Frank Dawson

Burdon - Butler (uncredited)

Joe Gray

Legionnaire (uncredited)

Duke Green

Legionnaire Glock (uncredited)

Thomas E. Jackson

Colonel in Recruiting Office (uncredited)

Gladys Jeans

Girl in Saida Cafe (uncredited)

Bob Kortman

Maharaja's Agent (uncredited)

Larry Lawson

Legionnaire (uncredited)

Tony Martelli

Minor Role (uncredited)

Francis McDonald

Arab Scout (uncredited)

Nestor Paiva

Corporal Golas (uncredited)

Bob Perry

Bald Legionnaire (uncredited)

George Regas

Arab Scout (uncredited)

Jerome Storm

Sergeant Major (uncredited)

Henry Sylvester

Legionnaire (uncredited)

Carl Voss

Legionnaire (uncredited)

Joe Whitehead

Sergeant (uncredited)

Harry Worth

Corporal (uncredited)