Rod Taylor as Scobie Malone

Christopher Plummer as Sir James Quentin

Lilli Palmer as Sheila Quentin

Camilla Sparv as Lisa Pretorius

Daliah Lavi as Maria Cholon

Clive Revill as Joseph

Lee Montague as Denzil

Calvin Lockhart as Jamaica

Derren Nesbitt as Pallain

Edric Connor as Julius

Burt Kwouk as Pham Chimh

Russell Napier as Leeds

Ken Wayne as Ferguson

Franchot Tone as Ambassador Townsend

Paul Grist as Coburn

Charles Tingwell as Jacko

Leo McKern as Mr Flannery, Premier of New South Wales (uncredited)

Gerald Sim as Airport Official (uncredited)

Tony Selby as Cameraman (uncredited)

Roy Beck as Ice Cream Seller at Wimbledon (uncredited)