Christopher Plummer
Sir James Quentin
Calvin Lockhart
Jamaica
Leo McKern
Mr Flannery, Premier of New South Wales (uncredited)
Rod Taylor
Scobie Malone
Charles Tingwell
Jacko
Clive Revill
Joseph
Burt Kwouk
Pham Chimh
Lee Montague
Denzil
Lilli Palmer
Sheila Quentin
Daliah Lavi
Maria Cholon
Camilla Sparv
Lisa Pretorius
Franchot Tone
Ambassador Townsend
Derren Nesbitt
Pallain
Tony Selby
Cameraman (uncredited)
Gerald Sim
Airport Official (uncredited)
Russell Napier
Leeds
Edric Connor
Julius
Ken Wayne
Ferguson