Élie Semoun as Gustave Latouche / Ghislaine Latouche

Joséphine de Meaux as Ghislaine Rateau

Héléna Noguerra as Adeline Gratin

Pierre-François Martin-Laval as Hervé Ducobu

Bruno Salomone as Esteban

François Viette as Ducobu

Juliette Chappey as Léonie Gratin

Cyril Lecomte as le directeur du village de vacances

Jean-Marc Ravera as le vieux marin

André Penvern as Antoine Ferchereau

Mohamed Metina as le guide du musée

Frédéric Saurel as le poissonnier

Jean-Michel Lahmi as le directeur du musée

Farrah Delaunay M'Bengue as la vendeuse de vêtements

Gérald NGuyen Ngoc as le chinois

Denis Mouries as le patron du bar

Frédéric Restagno as le marin

Anaïs Fabre as l'infirmière

Beebish as l'assistante du directeur du village

Annaëlle Celton as Alice

Antoine Semhoun as Gustave Latouche (16 ans)

Guillaume Celton as un adolescent sur le port