Naughty Marietta

Jeanette MacDonald

Marietta

Nelson Eddy

Captain Richard Warrington

Frank Morgan

Gov. Gaspar d'Annard

Elsa Lanchester

Madame d'Annard

Douglass Dumbrille

Prince de Namours de la Bonfain, Marietta's Uncle

Joseph Cawthorn

Herr 'Schumie' Schuman

Cecilia Parker

Julie

Walter Kingsford

Don Carlos

Greta Meyer

Frau Schuman

Akim Tamiroff

Rudolpho

Harold Huber

Abe

Edward Brophy

Zeke

Jane Barnes

Casquette Girl (uncredited)

Arthur Belasco

Mercenary Scout (uncredited)

Margaret Bloodgood

Heavy Casquette Girl (uncredited)

Ed Brady

Mercenary Scout (uncredited)

Ralph Brooks

Suitor (uncredited)

Georgia Caine

Undetermined Secondary Role (uncredited)