Mr. Robert Klein

Alain Delon

Florence

Jeanne Moreau

Nicole

Francine Bergé

Pierre

Michel Lonsdale

La Concierge

Suzanne Flon

Jeanine, Robert's mistress

Juliet Berto

Seller of the painting

Jean Bouise

Charles, Florence's husband

Massimo Girotti

Newspaper Director

Roland Bertin

Morgue keeper

Jean Champion

le fonctionnaire de la préfecture

Michel Aumont

Policeman

Etienne Chicot

Lola

Magali Clement

Photographer

Gérard Jugnot

(uncredited)

Raymond Danon

Young Worker

Hermine Karagheuz

Professor Montandon

Jacques Maury

Michelle

Dany Kogan

Elizabeth Kaza

Police Commissioner

Fred Personne

Françoise / Cathy / Isabelle

Francine Racette

Lucienne Lemarchand

Examined Woman

Isabelle Sadoyan

Mr. Klein's Father

Louis Seigner

Elisabeth Kaza

Rosina Rochette

Carole Achache

Lucienne Le Marchand

Carole Lange

Rosine Rochette

Maurice Vallier

Policeman

Pierre Vernier

Francois Viaur

Man at the Vel d'Hiv (uncredited)

Joseph Losey

(uncredited)

Brigitte Ariel

(uncredited)

Marius Balbinot

Un musicien (uncredited)

Maurice Baquet

(uncredited)

Philippe Brizard

(uncredited)

Jenny Clève

Le Commissaire-Priseur (uncredited)

Christian de Tillière

(uncredited)

Michel Delahaye

(uncredited)

Thierry de Brem

Extra (uncredited)

Bernard-Pierre Donnadieu

Georges, Newspaper Seller (uncredited)

Pierre Frag

(uncredited)

Mireille Franchino

Le Groom (uncredited)

David Gabison

Le Chauffeur à Ivry-Bataille (uncredited)

Maurice Jany

Le Fils de Pierre (uncredited)

Stephane Quatrehomme

La Voix du Speaker (voice) (uncredited)

Jean Topart

Une Déportée (uncredited)

Danielle Verne

Spectator (uncredited)

Tina Aumont

Little girl at the Vel d'Hiv (uncredited)

Nathalie Rigaux