Erich von Stroheim

as Count Wladislaw Sergius Karamzin

Rudolph Christians

as Andrew J. Hughes

Miss DuPont

as Helen Hughes

Maude George

as Princess Olga Petchnikoff

Mae Busch

as Princess Vera Petchnikoff

Dale Fuller

as Maruschka

Cesare Gravina

as Cesare Ventucci

Malvina Polo

as Marietta

Albert Edmondson

as Pavel Pavlich

Mary Philbin

as Crippled Girl (uncredited)

Nigel De Brulier

as Monk (uncredited)

C.J. Allen

as Albert I

Robert Edeson

as Andrew J. Hughes

Agnes Emerson

as Bit Role

Louise Emmons

as Mother Garoupe

Harrison Ford

as Armless Soldier

Mrs. Kent

as Dr. Judd's Wife

Edward Reinach

as Secretary of State of Monaco

Louis K. Webb

as Dr. Judd