Deanna Durbin
Ilonka Tolnay
Robert Cummings
Corporal Harry Marten
Mischa Auer
Gustav
Henry Stephenson
Emperor Franz Joseph
S.Z. Sakall
Latislav Teschek - the Baker
Walter Catlett
Headwaiter
Anne Gwynne
Jenny
Peggy Moran
Archduchess Irene
Reginald Denny
The Major
Kenneth Brown
Moritz
Billy Lenhart
Max
Franklin Pangborn
Wiedlemeyer
Edward Gargan
Inga - the Fortune Teller
Wade Boteler
Sergeant
Samuel S. Hinds
Von Zimmel
Leon Belasco
Violinist Orchestra Leader
Eddie Acuff
Earl (uncredited)
John Banner
Cymbalist (uncredited)
Bobby Barber
Waiter Who Spills Tray (uncredited)
Howard Hickman
Colonel (uncredited)
Ethelreda Leopold
Townswoman (uncredited)
George O'Hanlon
Peasant (uncredited)
Morgan Wallace
Frederick - Aide-de-Camp (uncredited)
Kathryn Adams
Girl with Fortune Teller
Frank Austin
Customer
Stanley Blystone
Detective
Harry C. Bradley
Mandate
Jack Chefe
Josef - Waiter
Dora Clement
Mrs. Tressler
William Gould
Chief of Detectives
Grace Hayle
Mrs. Burkhart
Herbert Heywood
Sepp - Wagon Driver
Fay Holderness
Townswoman
Maynard Holmes
Bugler
Claire James
Cafe Customer
Sidney Kibrick
Boy
Carl M. Leviness
Townsman
Aubrey Mather
Baron
Eric Mayne
Nobleman
Gene Morgan
Waiter
Tony Paton
Waiter
Eddie Polo
Cafe Proprietor
Ronald R. Rondell
Restaurant Patron
Frank Sully
Bert - Shawl Salesman
Douglas Wood
General