Rex Harrison
Cecil Fox
Susan Hayward
Mrs. Sheridan
Cliff Robertson
William McFly
Capucine
Princess Dominique
Edie Adams
Merle McGill
Maggie Smith
Sarah Watkins
Adolfo Celi
Inspector Rizzi
Hugh Manning
Volpone
David Dodimead
Mosca
Mimmo Poli
Cook (uncredited)
Luigi Scavran
Massimo (uncredited)
Jack Benny
Violinist Outside Restaurant (uncredited)
Herschel Bernardi
Oscar Ludwig (uncredited) (scenes deleted)
Massimo Serato
The Pretender (uncredited) (scenes deleted)
Joseph L. Mankiewicz
Director
Gianni Di Venanzo
Director of Photography
Franco Cirino
Second Assistant Director
Lee Theodore
Choreographer
Charles K. Feldman
Executive Producer
Gabriella Borzini
Hairdresser
Ken Muggleston
Set Dresser
John Addison
Original Music Composer
Amato Garbini
Makeup Artist
Gus Agosti
Assistant Director
Alessandro Alberti
Assistant Art Director
Cloudia Rebar
Scenic Artist
Thomas Sterling
Novel
Joseph L. Mankiewicz
Screenplay
Boris Juraga
Art Direction
Angelo Binarelli
Unit Manager
Jim Groom
Sound Editor
Yvonne Axeworthy
Continuity
David Bretherton
Editor
John DeCuir
Production Design
Paul S. Fox
Set Dresser
David Hildyard
Sound Recordist
Len Shilton
Sound Recordist
Rolf Gerard
Costume Design
Peter Elliott
First Assistant Editor
Paul S. Fox
Set Decoration
Attilio D'Onofrio
Associate Producer
Pasqualino De Santis
Assistant Camera
Frederick Knott
Theatre Play
Ben Jonson
Theatre Play
Giancarlo Del Brocco
Key Makeup Artist
John Addison
Conductor
Charles K. Feldman
Presenter
Eric Stacey
Associate Producer