Jean Dujardin as Brice de Nice

Clovis Cornillac as Marius de Fréjus

Élodie Bouchez as Jeanne

Bruno Salomone as Igor d'Hossegor

Alexandra Lamy as Chantal, la sirène / Alice de Nice

Delphine Chanéac as Marjorie

François Chattot as Bertrand Agostini

Mathias Mlekuz as Eudes Angellini

Antoine Duléry as Micky la légende

Lannick Gautry as Arnaud de Lacanau

Xavier Boiffier as Mario, le serveur

Julia Molkhou as Gladys, la reine du kiss

Sissi Duparc as Employée de banque

Jérémie Quaegebeur as Victor d'Hossegor

Alexandra Fleischer as Catherine, l'infirmière

Didier Menin as Le patron du restaurant

Isabelle Caubère as Josie

Patrick Ligardes as Jean-Marie Guitera

Richard Darbois as Bodhi