Grace Moore

Princess Elizabeth / Cissy

Franchot Tone

Emperor Franz Josef

Walter Connolly

Maximilian, Duke of Bavaria

Raymond Walburn

Col. Von Kempen

Elisabeth Risdon

Grand Duchess Sofia

Nana Bryant

Louise

Victor Jory

Capt. Palfi

Frieda Inescort

Princess Helena

Thurston Hall

Major

Herman Bing

Pretzelberger

George Hassell

Herlicka

Johnny Arthur

Chief of the Secret Police

Gwen Verdon

Specialty Ballerina (uncredited)

Ada Mae Moore

Snake Charmer

Josephine McKim

Mermaid

Josef von Sternberg