Mr. Klein

Alain Delon

As Mr. Robert Klein

Jeanne Moreau

As Florence

Francine Bergé

As Nicole

Juliet Berto

As Jeanine, Robert's mistress

Jean Bouise

As Seller of the painting

Suzanne Flon

As Concierge of rue des Abbesses

Massimo Girotti

As Charles, Florence's husband

Michael Lonsdale

As Pierre

Michel Aumont

As Jew Affairs Section Official

Roland Bertin

As Newspaper Director

Jean Champion

As Morgue keeper

Etienne Chicot

As Policeman

Magali Clément

As Lola

Gérard Jugnot

As Photographer

Hermine Karagheuz

As Young Worker

Jacques Maury

As Professor Montandon

Fred Personne

As Police Commissioner

Francine Racette

As Françoise / Cathy / Isabelle

Isabelle Sadoyan

As Examined Woman

Louis Seigner

As Mr. Klein's Father

Elisabeth Kaza

As

Carole Achache

As

Lucienne Le Marchand

As

Rosine Rochette

As

Maurice Vallier

As

Pierre Vernier

As Policeman

François Viaur

As

Joseph Losey

As Man at the Vel d'Hiv (uncredited)

Brigitte Ariel

As (uncredited)

Marius Balbinot

As (uncredited)

Maurice Baquet

As Musician (uncredited)

Philippe Brizard

As (uncredited)

Jenny Clève

As (uncredited)

Raymond Danon

As (uncredited)

Christian de Tillière

As Auctioneer (uncredited)

Michel Delahaye

As (uncredited)

Bernard-Pierre Donnadieu

As Extra (uncredited)

Pierre Frag

As Georges, Newspaper Seller (uncredited)

Mireille Franchino

As (uncredited)

David Gabison

As Bellboy (uncredited)

Maurice Jany

As Driver in Ivry-la-Bataille (uncredited)

Stephane Quatrehomme

As Pierre's Son (uncredited)

Jean Topart

As Speaker's voice (voice) (uncredited)

Danielle Verne

As Deportee (uncredited)

Dany Kogan

As Michelle

Thierry de Brem

As (uncredited)

Tina Aumont

As Spectator (uncredited)

Nathalie Rigaux

As Little girl at the Vel d'Hiv (uncredited)