Val-Couesnon (; ) is a commune in the Ille-et-Vilaine department in the Brittany in northwestern France. It was established on 1 January 2019 by merger of the former communes of Antrain (the seat), La Fontenelle, Saint-Ouen-la-Rouërie and Tremblay.
Population data refer to the commune in its geography as of January 2025.