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Robert Lamoureux
as Robert Langlois, law student
Fernand Ledoux
as Fernand Langlois, father, professor
Gaby Morlay
as Gabrielle Langlois, mother
Nicole Courcel
as Catherine Liseray, young neighbor
Louis de Funès
as Mr. Calomel, neighbor on the floor above
Gaston Modot
as Street violinist
Madeleine Barbulée
as Marie-Louise, first maid
Yolande Laffon
as Madeleine Sautaupain, Mom's friend
Robert Rollis
as Léon “Alibi”, friend of Robert
Sophie Sel
as Student of Mr. Langlois
Dominique Davray
as Neighborhood butcher
Françoise Hornez
as Nicole
Judith Magre
as Germaine, secretary
Alix Mahieux
as Little Sylvie
Sophie Mallet
as Maid
Jany Vallières
as Second comrade
Albert Michel
as Prompter at the performance
Claude Castaing
as
René-Jean Chauffard
as Neighbor of the building
René Fleur
as Notary
Robert Le Béal
as Amateur
Jacques Marin
as Gaston, neighbor on the sixth floor, under the roofs
Jean Tissier
as Maître Pillat, of the council of the bar association
Martine Cuhaciender
as Little Sylvie (uncredited)
Léon Arvel
as Parent (uncredited)
Charles Bayard
as (uncredited)
Paul Bisciglia
as Tenant on the sixth floor, under the roof (uncredited)
Christian Brocard
as Comrade of Léon (uncredited)
Marcel Charvey
as Man who separates from his wife (uncredited)
Yvonne Constant
Henri Coutet
Hubert Deschamps
as Spectator who didn't have dinner (uncredited)
Édouard Francomme
as Un voisin célibataire (uncredited)
Benoîte Labb
Jean-Paul Le Chanois
as Spectateur (« Je ne vous dit rien ») (uncredited)
Dominique Marcas
as Henriette (uncredited)
Bernard Musson
as Spectator came to criticize (uncredited)
Gaëtan Noël
Laure Paillette
as Spectator with the bulky hair (uncredited)
Francia Seguy
Paul Villé
as Uncle (uncredited)
André Wasley
Fabien Loris
Director
Marcel Aymé
Writer
Pierre Véry
Dialogue
Jules Borkon
Executive Producer
Marc Fossard
Director of Photography
Emma Le Chanois
Editor
Robert Clavel
Production Design
Robert Guisgand
Art Direction
Georges Van Parys
Original Music Composer
