Sacrée jeunesse

André Luguet

Thomas Longué

Gaby Morlay

Zabeth Longué

Micheline Dax

Mathilde Billard, Thomas's secretary and lover

Guy Bertil

Jean-Paul Longué, son of Étienne and Armande

Jacques Morel

Étienne Longué, nephew of Thomas

Gisèle Grandpré

Armande Longué, wife of Étienne

Noël Roquevert

Mr. Horville, insurance agent

Claudie Laurence

Sophie

Lisette Lebon

Odile

Mischa Auer

Professor Koranoff

Guy Bedos

Mike, young man who was slapped

Daniel Cauchy

Gérard

Paul Faivre

Abbot

Paul Villé

Dr. Trémière

Andrée Guize

Mrs. Deponchette

Arielle Coigney

Yolande Cola

Jean-Pierre Cassel

Young man at the nightclub (uncredited)

Rivers Cadet

Longués' driver (uncredited)

Jacques Joignant

Young man at the nightclub (uncredited)