John Wayne as Michael "Guns" Donovan

Elizabeth Allen as Ameilia Dedham

Lee Marvin as Thomas "Boats" Gilhooley

Cesar Romero as Andre de Lage

Mike Mazurki as Monk Menkowicz

Jack Warden as William Dedham

Jacqueline Malouf as Lelani Dedham

Cherylene Lee as Sarah "Sally" Dedham

Jeffrey Byron as Luki Dedham

Dorothy Lamour as Miss Lafleur

Marcel Dalio as Father Cluzeot

Dick Foran as Sean O'Brien

Edgar Buchanan as Francis O'Brien

Jon Fong as Mister Eu

Dan Ford as Child (uncredited)

Mae Marsh as Family Council Member (uncredited)

Ron Nyman as Naval Officer (uncredited)

Aissa Wayne as Native Girl (uncredited)

Sara Taft as Family Council Member (uncredited)

Chuck Roberson as Festus

John Alderson as Officer (uncredited)

Frank Hagney as Chief Petty Officer (uncredited)

Richard Kipling as Lawyer (uncredited)

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

Charles Seel as Grand Uncle Sedley Atterbury Pennyfeather (uncredited)

Patrick Wayne as Australian Navy Lieutenant (uncredited)