Jean-Claude Brialy as Paul Martin

Michel Serrault as Le commissaire Baudu

Louis de Funès as Norbert Charolais, Directeur Général du 321

Sophie Daumier as Solange, secrétaire et amant de Paul

Anne Tonietti as Danielle Brossard, fiancée de Paul

Henri Virlogeux as Mr. Brossard

Alfred Adam as Hubert Beaumanoir, cadre supérieur du 321

René Clermont as Frépillon, cadre supérieur du 321

Jacques Dynam as Macheron, collaborateur de Paul

Paul Gay as Le speaker TV

Gilberte Géniat as Madame Brossard

Jean Ozenne as D'Aleyrac, cadre supérieur du 321

Guy Bedos as

Marc Arian as Un huissier (uncredited)

André Badin as Un représentant de sandales (uncredited)

Charles Bayard as Un représentant (uncredited)

Marcel Bernier as Un acheteur de journaux (uncredited)

Robert Blome as Un collaborateur de l'agence (uncredited)

Florence Blot as La tenancière de 'Paris Élite' (uncredited)

Philippe Castelli as Le portier du 321 (uncredited)

Henri Coutet as (uncredited)

Martine de Breteuil as Une invitée (uncredited)

Alain Delon as Lambert (uncredited)

Albert Dinan as Un homme (uncredited)

Anne Doat as (uncredited)

Gisèle Grandpré as Mme Charolais (uncredited)

René Hell as Mr. Martin (uncredited)

Guy Henry as (uncredited)

Michel Modo as Le Facteur (uncredited)

Max Montavon as Un agent de police (uncredited)

Jean Obé as L'employé du parking (uncredited)

Jean-Claude Rémoleux as Employé du 321 (uncredited)

Pierre Tchernia as Legris, nouveau cadre supérieur de 321 (uncredited)

André Tomasi as Un inspecteur (uncredited)

Dominique Zardi as (uncredited)

Jean-Pierre Zola as Un représentant de sandales (uncredited)