Lucien Baroux

Curator of the Mathematics Museum

Suzy Prim

Madame Ménard

Suzanne Dehelly

Dora

Foun-Sen

Renée Ménard

Jean Tissier

Civil Status employee

Pierre Larquey

Crazy psychiatrist

Jean Brochard

Guide

Jean Périer

Old man

Jean Mercanton

Paul, young sportsman

René Génin

Tramp

Marguerite Deval

Madame widow Ménard

Marcelle Monthil

Friend of the Ménard widow

Gabrielle Fontan

Concierge

Maximilienne

Young lady Ménard

Julienne Paroli

Friend of the Ménard widow

Charles Lemontier

Head waiter

Louis Florencie

Commissioner

Georges Bever

Coffee boy

Jean Morel

President

Jacques Meyran

Old man's doctor

Max Dalban

Wizard

Édouard Delmont

Colonial

Marguerite Moreno

Novelist

Robert Le Vigan

Amédée Garbure

Alfred Baillou

Representative of the Ménard family (uncredited)

Marguerite de Morlaye

Nurse (uncredited)

Maurice Devienne

(uncredited)

Charles Granval

Millionaire centenarian (uncredited)

Albert Malbert

Representative of the Ménard family (uncredited)

Maurice Marceau

(uncredited)

Albert Morys

(uncredited)

Bernard-Roland

Director