Constance Bennett
Duchess of Florence
Fredric March
Benvenuto Cellini
Frank Morgan
Alessandro, Duke of Florence
Jack Rutherford
Captain of the Guards
Irene Ware
Daughter of the Royal House of Bocci
Lucille Ball
Lady-in-Waiting (uncredited)
Bonnie Bannon
Girl (uncredited)
Lionel Belmore
Court Member (uncredited)
Ward Bond
Palace Guard Finding Cellini's Clothes (uncredited)
Lane Chandler
Jailer (uncredited)
James Flavin
Palace Guard (uncredited)
Bess Flowers
Lady-in-Waiting (uncredited)
Mary Lange
Lady-in-Waiting (uncredited)
Theodore Lorch
Executioner (uncredited)
Russ Powell
Servant (uncredited)
Dewey Robinson
Steward (uncredited)
Constantine Romanoff
Executioner (uncredited)
Harry Wilson
Henchman (uncredited)