Lady L

Sophia Loren

Lady Louise Lendale / Lady L

Paul Newman

Armand Denis

David Niven

Dicky, Lord Lendale

Peter Ustinov

Prince Otto of Bavaria

Marcel Dalio

Sapper

Michel Piccoli

Lecoeur

Claude Dauphin

Inspector Mercier

Cecil Parker

Sir Percy

Philippe Noiret

Ambroise Gérôme

Jacques Dufilho

Bealu

Eugene Deckers

Koenigstein

Daniel Emilfork

Kobeleff

Hella Petri

Madam

Jean Wiener

Krajewski

Roger Trapp

Police Inspector Dubaron

Jean Rupert

Joe Dassin

Police inspector

Jacques Legras

Police inspector

Mario Feliciani

Italian anarchist

Sacha Pitoëff

Bomb-throwing revolutionary

Arthur Howard

Butler

Dorothy Reynolds

Jacques Ciron

Hazel Hughes

Tanya Lopert

Agneau (uncredited)

Peter Ustinov

Director

Romain Gary

Novel

Peter Ustinov

Writer

Jean d'Eaubonne

Set Designer

Maurice Barnathan

Set Dresser

Marcel Escoffier

Costume Design

Jean Françaix

Original Music Composer

William Tuttle

Makeup Artist

Alex Archambault

Hairstylist

Paul Feyder

Assistant Director

Auguste Capelier

Set Decoration

Roger Dwyre

Editor

Raymond Picon Borel

Camera Operator

Jacqueline Guyot

Costume Design

Michel Deruelle

Makeup Artist

Amalia Paoletti

Hairstylist

Margot Capelier

Casting Director

Carlo Ponti

Producer

Henri Alekan

Director of Photography

William Robert Sivel

Sound Engineer

Lucie Lichtig

Continuity

Giuseppe Annunziata

Makeup Artist

Pierre Laurent

Production Manager

Karl Baumgartner

Special Effects

René Fargeas

Unit Manager