Robert Morley
Oscar Hammerstein I
John McCallum
Charles Armstrong
John Justin
Eric Walton
Martita Hunt
Mme. Marchesi
Sybil Thorndike
Queen Victoria
Joseph Tomelty
Thomas Mitchell
Beatrice Varley
Aunt Catherine
Theodore Bikel
Paul Brotha
Marcel Poncin
Roger (uncredited)
Robert Rietti
Italian Policeman (uncredited)
Bill Shine
Man (uncredited)
Patrice Munsel
Nellie Melba
Alec Clunes
Cesar Carlton
Violetta Elvin
Prima Ballerina
Cecile Chevreau
Annette
Charles Craig
Man (uncredited)
Dorit Welles
Adelina Patti (uncredited)