| Person | Type | Job | Role(s) |
|---|---|---|---|
 Georges Simenon | Crew | Writing | Novel |
 Jean-Paul Le Chanois | Crew | Writing | Adaptation |
 Richard Pottier | Crew | Directing | Director |
 Albert Préjean | Cast | Actor | Maigret |
 André Gabriello | Cast | Actor | Lucas |
 Antoine Balpêtré | Cast | Actor | Le grand patron |
 Colette Régis | Cast | Actress | Madame Le Cloaguen |
 Frédéric Mariotti | Cast | Actor | Le garçon du buffet (uncredited) |
 Gabrielle Fontan | Cast | Actress | La soeur de Le Cloaguen |
 Georges Gosset | Cast | (uncredited) | |
 Guillaume de Sax | Cast | Actor | Maître Laignan |
 Henri Vilbert | Cast | Actor | Amadieu |
 Huguette Vivier | Cast | Actress | Eliane (uncredited) |
 Héléna Manson | Cast | Actress | Marie, la bonne (uncredited) |
 Jacques Denoël | Cast | Actor | Jacques (uncredited) |
Janine Viénot | Cast | La concierge de Jeanne Dumont (uncredited) | |
 Jean Dasté | Cast | Actor | Le clerc (uncredited) |
 Jean Daurand | Cast | Actor | Le coursier (uncredited) |
 Jean Tissier | Cast | Actor | Mascouvin |
 Juliette Faber | Cast | Actress | Berthe |
Marcel Duhamel | Cast | Actor | Le peintre (uncredited) |
Marcelle Rexiane | Cast | Actress | La patronne de l'hôtel (uncredited) |
Marguerite Ducouret | Cast | Actress | Madame Cognet (uncredited) |
Maurice Marceau | Cast | Actor | Un inspecteur (uncredited) |
 Maximilienne | Cast | Actress | Madame Bertaud (uncredited) |
 Noël Roquevert | Cast | Actor | Louis Dubief |
 Pierre Palau | Cast | Actor | Le docteur Pierre |
Pierre Ferval | Cast | (uncredited) | |
 Édouard Delmont | Cast | Actor | Le Cloaguen |
Édouard Francomme | Cast | Actor | (uncredited) |
 Palau | Cast | Le docteur Pierre | |
André Varennes | Cast | Bouffartigues (uncredited) | |
Albert Brouett | Cast | (uncredited) | |
France Delahalle | Cast | Actress | (uncredited) |
Henri Charrett | Cast | Actor | (uncredited) |
Jean-Marie Boyer | Cast | Actor | Le petit employé (uncredited) |
Raymond Dardelin | Cast | (uncredited) | |
Fabienne Fortaire | Cast | (uncredited) | |
| Person | Type | Job | Role(s) |
