Melba

Patrice Munsel

Nellie Melba

Robert Morley

Oscar Hammerstein I

John McCallum

Charles Armstrong

John Justin

Eric Walton

Alec Clunes

Cesar Carlton

Martita Hunt

Mme. Marchesi

Sybil Thorndike

Queen Victoria

Joseph Tomelty

Thomas Mitchell

Beatrice Varley

Aunt Catherine

Violetta Elvin

Prima Ballerina

Cecile Chevreau

Annette

Theodore Bikel

Paul Brotha

Charles Craig

Man (uncredited)

Marcel Poncin

Roger (uncredited)

Robert Rietti

Italian Policeman (uncredited)

Bill Shine

Man (uncredited)

Dorit Welles

Adelina Patti (uncredited)