Constance Bennett
Duchess of Florence
Fredric March
Benvenuto Cellini
Frank Morgan
Alessandro, Duke of Florence
Fay Wray
Angela
Vince Barnett
Ascanio
Jessie Ralph
Beatrice
Louis Calhern
Ottaviano
Jay Eaton
Polverino
Paul Harvey
Emissary
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)
Gwen Wakeling
Costume Design
Richard Day
Art Direction
Gregory La Cava
Director
Bess Meredyth
Screenplay
Charles Rosher
Director of Photography
Darryl F. Zanuck
Producer
Barbara McLean
Editor
Fred Fox
Assistant Director
William A. Reinhart
Assistant Camera
Roy Clark
Camera Operator
William Goetz
Associate Producer
Raymond Griffith
Associate Producer
Clarence Hewitt
Still Photographer
Roy Tripp
Camera Operator
Adolph Bolm
Other
Joseph M. Schenck
Presenter
Alfred Newman
Original Music Composer
Fred De Gresac
Adaptation
Edwin Justus Mayer
Theatre Play