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)

Albert Conti

Mueller (uncredited)

George Davis

Milkman (uncredited)

Carlos De Valdez

Adjutant (uncredited)

Dudley Murphy