Ted Billings
Train Passenger Eating Banana (uncredited)
Snitz Edwards
Josef
Lewis Stone
Rudolf Rassendyll / King Rudolf
Ramon Novarro
Rupert of Hentzau
John George
Assassin
Alice Terry
Princess Flavia
Frederick Vogeding
Detchard (uncredited)
Stuart Holmes
Grand Duke 'Black' Michael
Robert Edeson
Colonel Sapt
Edward Connelly
Marshal von Strakencz
Eric Mayne
Rudolf's Brother Lord Burlesdon (uncredited)
Malcolm McGregor
Capt. Fritz von Tarlenheim
Barbara La Marr
Antoinette de Mauban
Lon Poff
Archbishop (uncredited)