Jean-Paul Belmondo as Léon Morin

Emmanuelle Riva as Barny

Irène Tunc as Christine Sangredin

Nicole Mirel as Sabine Levy

Gisèle Grimm as Lucienne

Marco Behar as Edelman

Marc Eyraud as Anton

Monique Hennessy as Arlette

Edith Loria as Danielle Holdenberg

Monique Bertho as Marion

Nina Grégoire as

Simone Vannier as Secretary

Lucienne Marchand as Secretary

Nelly Pitorre as Secretary

Ernest Varial as Director

Chantal Gozzi as Young France

Patricia Gozzi as Old France

Marielle Gozzi as Adult France

Cédric Grant as American Soldier

George Lambert as American Soldier

Gérard Buhr as Gunther

Howard Vernon as Colonel

Renée Liques as

Volker Schlöndorff as German Soldier (uncredited)

Claude Achard as (uncredited)

Adeline Aucoc as Old Lady (uncredited)

Maurice Auzel as Man in St Bernard Church (uncredited)

André Badin as (uncredited)

Madeleine Ganne as Betty (uncredited)

Louis Saintève as Man (uncredited)