Louis de Funès as Charles Duchemin

Coluche as Gérard Duchemin

Ann Zacharias as Marguerite

Julien Guiomar as Jacques Tricatel

Raymond Bussières as Henri

Philippe Bouvard as Philippe Bouvard

Daniel Langlet as Lambert

Claude Gensac as Marguerite

Georges Chamarat as Le doyen des académiciens

Jean Martin as Le médecin

Gérard Boucaron as Ficelle

Yves Afonso as Le faux plombier

Marcel Dalio as Le tailleur de Duchemin

Vittorio Caprioli as Vittorio

Aurora Maris as Gina

Martin Lamotte as Roland

Fernand Guiot as Dubreuil

Antoine Marin as Un collaborateur de Duchemin

Maurice Vallier as Un collaborateur de Duchemin

Albert Michel as Morand

Paul Bisciglia as Le bagagiste

Robert Lombard as Le patron de la 'Coquille d'or'

Pierre Forget as Le patron de 'L'auberge de la truite'

Eduardo Bergara Leumann as Le cuistot de 'L'auberge de la truite'

Gérard Lorin as Le dentiste de Duchemin

Dyanik Zurakowska as L' Assistante médical du dentiste

Max Montavon as Mr. Godefroy

Pierre Decazes as Le patron de l'hôtel

Mac Ronay as Sommelier

François Viaur as Un sommelier Romanée-Conti 1964

Jean Amadou as Récitant/Narrator(voix) (non crédité)

Dominique Davray as L'infirmière musclée

Bruno Moynot as Un Musicien

Gérard Lanvin as Un membre du cirque(non crédité)

François Guillaume as Journaliste

Claude Zidi as Chef de rang de la 'Coquille d'or'(non crédité)

Jacques Mathou as Photographe de la Clinique

Auguste Geronimi as Spectateur de cirque aspergé d'eau

Bob Morel as

Gérard Victor as

Marie Frey as

Catherine Meurisse as

Marie-Anne Chazel as Artiste de cirque

Jean Droze as Jardínier

Freddy Cantarelli as Clown du cirque

Bibi Cantarelli as Clown du cirque

Bouboule as Artiste de cirque