Gregory Peck
Capt. Keith Mallory

David Niven
Cpl. James Arthur Miller

Anthony Quinn
Col. Andrea Stavros

Stanley Baker
Pvt. 'Butcher' Brown

Anthony Quayle
Maj. Roy Franklin

James Darren
Pvt. Spyros Pappadimos

Irene Papas
Maria Pappadimos

Gia Scala
Anna

James Robertson Justice
Commodore Jensen / Prologue Narrator

Richard Harris
Squadron Leader Howard Barnsby RAAF

Bryan Forbes
Cohn

Allan Cuthbertson
Maj. Baker

Michael Trubshawe
Weaver

Percy Herbert
Sgt. Grogan

Walter Gotell
Muesel

Tutte Lemkow
Nicolai

Albert Lieven
Commandant

Norman Wooland
Group Captain

Kleo Skouloudi
Bride

Christopher Rhodes
German Gunnery Officer

Carl Duering
German Radar Operator (uncredited)

Gerard Heinz
German surgeon (uncredited)

Frank Henson
Radio operator (uncredited)

Rosemary Nicols
Undetermined Secondary Role (uncredited)

Robert Rietti
Mallory - German Voice (voice) (uncredited)

Michael Sarne
Undetermined Secondary Role (uncredited)

Bob Simmons
German Soldier on Navarone (uncredited)