Deanna Durbin

as Ilonka Tolnay

Robert Cummings

as Corporal Harry Marten

Mischa Auer

as Gustav

Henry Stephenson

as Emperor Franz Joseph

S.Z. Sakall

as Latislav Teschek - the Baker

Walter Catlett

as Headwaiter

Anne Gwynne

as Jenny

Peggy Moran

as Archduchess Irene

Reginald Denny

as The Major

Kenneth Brown

as Moritz

Billy Lenhart

as Max

Franklin Pangborn

as Wiedlemeyer

Edward Gargan

as Inga - the Fortune Teller

Wade Boteler

as Sergeant

Samuel S. Hinds

as Von Zimmel

Leon Belasco

as Violinist Orchestra Leader

Eddie Acuff

as Earl (uncredited)

John Banner

as Cymbalist (uncredited)

Bobby Barber

as Waiter Who Spills Tray (uncredited)

Howard Hickman

as Colonel (uncredited)

Ethelreda Leopold

as Townswoman (uncredited)

George O'Hanlon

as Peasant (uncredited)

Morgan Wallace

as Frederick - Aide-de-Camp (uncredited)

Kathryn Adams

as Girl with Fortune Teller

Herbert Ashley

as Detective

Michael Audley

as Hans

Frank Austin

as Customer

Polly Bailey

as Minnie

Vangie Beilby

as Townswoman

Stanley Blystone

as Detective

Harry C. Bradley

as Mandate

Jack Chefe

as Josef - Waiter

Dora Clement

as Mrs. Tressler

Polly Connell

as Townswoman

Virginia Engels

as Girl in Cafe

William Gould

as Chief of Detectives

Ernest Grooney

as Townsman

Grace Hayle

as Mrs. Burkhart

Herbert Heywood

as Sepp - Wagon Driver

Fay Holderness

as Townswoman

Maynard Holmes

as Bugler

Paul Hurst

as Headwaiter

Claire James

as Cafe Customer

Frank Jaquet

as Detective

Sheldon Jett

as Policeman

Sidney Kibrick

as Boy

Leslie Kaye

as Townswoman

Carl M. Leviness

as Townsman

Jack Lomas

as Customer

Aubrey Mather

as Baron

Eric Mayne

as Nobleman

Gene Morgan

as Waiter

Tony Paton

as Waiter

Joe Ploski

as Townsman

Thomas Pogue

as Customer

Eddie Polo

as Cafe Proprietor

Ronald R. Rondell

as Restaurant Patron

Sam Savitsky

as Nobleman

Frank Sully

as Bert - Shawl Salesman

Henry Victor

as Dutch Officer

Douglas Wood

as General