Maen Roch (; literally meaning "Rock Rock" in both Gallo and Breton; ) is a commune in the department of Ille-et-Vilaine, western France. The municipality was established on 1 January 2017 by merger of the former communes of Saint-Brice-en-Coglès (the seat) and Saint-ÃÂtienne-en-Coglès.
Population data refer to the commune in its geography as of January 2025.