* Charlton Heston as Major Matt Lewis
* Ava Gardner as Baroness Natalia Ivanova
* David Niven as Lord William "Billy" Bowen
* Flora Robson as The Dowager Empress
* Leo Genn as Prince Ching
* Robert Morley as Sir Arthur Robson
* John Derek as Russian Officer Nikolai Rostov
* Nigel Patrick as Sir Peter Humphreys
* Harry Andrews as Captain James Black
* Paul Lukas as Ambassador Petrovsky
* Eli Wallach as Commander "Tiger" Chen
* Cornel Wilde as Captain Yang
* Mona Washbourne as Old Lady Chen
* Margaretta Scott as Madame de Sadesky
* Luciana Paluzzi as Mme. D'Arcy
* Kieron Moore as Captain "Rusty" D'Arcy
* James Donald as Captain Edward Lowe
* Peter Cushing as Mr. Fremont
This was a large ensemble cast with many talented actors and actresses.