Saint-Vincent-sur-Oust , literally Saint-Vincent on Oust; Breton: Sant-Visant-an-Oud] is a commune in the Morbihan department of Brittany in north-western France.
Saint-Ouen-sur-Morin , literally Saint-Ouen on Morin] is a commune in the Seine-et-Marne department in the Île-de-France region in north-central France.
Saint-Laurent-sur-Oust , literally Saint-Laurent on Oust; Breton: Sant-Laorañs-Graeneg] is a commune in the Morbihan department of Brittany in north-western France. Inhabitants of Saint-Laurent-sur-Oust are called in French Laurentins.