Stéphane Rideau (born 25 July 1976) is a French actor. Although intending to pursue a career in sports, he was discovered in 1992 at a rugby game and then auditioned for a role in the film Les Roseaux sauvages (Wild Reeds) by André Téchiné. He was, at the time, sixteen years old.
He later played the role of a gay teenager in Presque rien (Come Undone) directed by Sébastien Lifshitz. Rideau has a long acting experience that includes the films Loin, Le Ventre de Juliette, Le Clan and Le Cadeau d'Élena. He currently lives with his partner Celia and their daughter.