Raimu as Antonin Ramatuel / Monsieur La Souris

Aimé Clariond as Simon Negretti

Paul Amiot as Commissioner Lucas

Raymond Aimos as Monsieur Cupidon

Charles Granval as Laborde

René Bergeron as Inspector Lognon

Pierre Jourdan as Frédéric Muller

Marcel Melrac as Jim

Jo Dervo as Fred

Micheline Francey as Lucile Boisvin

Marie Carlot as Dora

Gilbert Gil as Christian Osting

Paul Demange as Fat lady’s husband (uncredited)

Max Doria as (uncredited)

Fernand Flament as (uncredited)

Madhyanah Foy as (uncredited)

Émile Genevois as Hunter (uncredited)

Georges Gosset as (uncredited)

Paule Langlais as Young woman (uncredited)

Robert Le Fort as Coffee boy (uncredit)

Made Siamé as Fat lady (uncredited)