Dudley Murphy
Director Harry Rapf
Producer

Ramon Novarro
Archduke Paul 'Gustl' Gustave Evelyn Laye
Elizabeth Katherine Anne 'Lisl' Gluck Charles Butterworth
Willy Fitch Una Merkel
Fanni Kerner Edward Everett Horton
Baron Szereny Donald Cook
Toni Berngruber Henry Stephenson
Emperor Franz Josef Rosalind Russell
Countess Zarika Rafay Herman Bing
Nepomuk Florine Baile
Undetermined Role (uncredited) Max Barwyn
Max - the Waiter (uncredited) Art Berry Sr.
Undetermined Role (uncredited) (unconfirmed)

Edgar Allan Woolf
Screenplay Franz Schulz
Screenplay Vicki Baum
Story Conrad A. Nervig
Editor James Wong Howe
Director of Photography Oscar Hammerstein II
Musical Sigmund Romberg
Music Herbert Stothart
Conductor Wayne Allen
Orchestrator R. H. Bassett
Orchestrator Paul Marquardt
Orchestrator Charles Maxwell
Orchestrator