Jean-Claude Brialy

Paul Martin

Michel Serrault

Baudu, police inspector

Louis de Funès

Norbert Charolais, General Director of 321

Sophie Daumier

Solange, secretary and lover of Paul

Anne Tonietti

Danielle Brossard, Paul's fiancée

Henri Virlogeux

Mr. Brossard

Alfred Adam

Hubert Beaumanoir, senior manager of 321

René Clermont

Frépillon, senior manager of 321

Jacques Dynam

Macheron, Paul's collaborator

Paul Gay

TV announcer

Gilberte Géniat

Madame Brossard

Jean Ozenne

D'Aleyrac, senior manager of 321

Guy Bedos

Marc Arian

Bailiff (uncredited)

André Badin

Sandals representative (uncredited)

Marcel Bluwal