John Wayne
Michael "Guns" Donovan

Elizabeth Allen
Ameilia Dedham

Lee Marvin
Thomas "Boats" Gilhooley

Cesar Romero
Andre de Lage

Mike Mazurki
Monk Menkowicz

Jack Warden
William Dedham

Jeffrey Byron
Luki Dedham

Dorothy Lamour
Miss Lafleur

Marcel Dalio
Father Cluzeot

Dick Foran
Sean O'Brien

Edgar Buchanan
Francis O'Brien

Mae Marsh
Family Council Member (uncredited)

Ron Nyman
Naval Officer (uncredited)

Sara Taft
Family Council Member (uncredited)

Chuck Roberson
Festus

John Alderson
Officer (uncredited)

Frank Hagney
Chief Petty Officer (uncredited)

John Qualen
Deckhand Who Cries 'Man Overboard' (uncredited)

Patrick Wayne
Australian Navy Lieutenant (uncredited)