- Francis Devlaeminck - Monsieur Riffle, hairdresser, Laurent's father
- Laurent Devlaeminck - Laurent Riffle
- Marcel Berbert - School Principal
- François Truffaut - Martine's father
- Laura Truffaut - Madeleine Doinel, Oscar's mother
- Eva Truffaut - Patricia
- Corinne Boucart - Corinne
- Vincent Touly - Concierge
- Pascale Bruchon - Martine
- Claudio Deluca - Matthieu Deluca
- Franck Deluca - Franck Deluca
- Richard Golfier - Richard
- Sylvie Grezel - Sylvie
- Paul Heyraud - Monsieur Deluca
- Michèle Heyraud - Madame Deluca
- Sebastien Marc - Oscar
- Christine Pellé - Madame Leclou, Julien's mother
- Jeanne Lobre - Julien's grandmother
- Christian Lentretien - Monsieur Golfier, Richard's father (uncredited)
- Yvon Boutina - Oscar, adult (uncredited)
- Jean-Francis Gondre - Oscar's father (uncredited)
- Hélène Jeanbrau - Doctor (uncredited)
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