Charlton Heston
Maj. Matt Lewis
Ava Gardner
Baroness Natalie Ivanoff
David Niven
Sir Arthur Robertson
Flora Robson
Dowager Empress Tzu-Hsi
Harry Andrews
Father de Bearn
Robert Helpmann
Prince Tuan
Kurt Kasznar
Baron Sergei Ivanoff
Elizabeth Sellars
Lady Sarah Robertson
Jacques Sernas
Maj. Bobrinski
Jerome Thor
Capt. Andy Marshall
Joseph Fürst
Capt. Hanselman
Walter Gotell
Capt. Hoffman
Alfredo Mayo
Spanish Minister
Martin Miller
Hugo Bergmann
Conchita Montes
Mme Gaumaire
José Nieto
Italian Minister
Eric Pohlmann
Baron von Meck
Robert Urquhart
Capt. Hanley
Burt Kwouk
Old Man (voice)
Mike Steen
Undetermined Role (uncredited)
Lucy Appleby
Martha (uncredited)
Félix Dafauce
Dutch Minister (uncredited)
Andrea Esterhazy
Austrian Minister (uncredited)
Carlos Casaravilla
Japanese Minister (uncredited)
R.S.M. Brittain
Sergeant Major (uncredited)
Michael Chow
Chiang (uncredited)
Chow Siu-Loi
Court Boxer (uncredited)
Mitchell Kowall
US Marine (uncredited)
Paul Naschy
Extra (uncredited)
Fernando Sancho
Belgian Minister (uncredited)
Lucille Soong
Concubine (uncredited)
Robert Rietti
Spanish Minister (voice) (uncredited)
Milton Reid
Boxer (uncredited)
Nicholas Ray
US Minister (uncredited)
Alfred Lynch
Gerald (uncredited)
John Moulder-Brown
Tommy (uncredited)
Guillermo Vera
El hombre del carrito (uncredited)
George Wang
Boxer Chief (uncredited)