May-sur-OrneMay-sur-Orne is a former commune in the Calvados department in the Normandy region in northwestern France. It was merged with Saint-Martin-de-Fontenay to form Saint-Martin-de-May on 1 January 2025.WWW may-sur-orne.frFB maysurorneGeographyThe River Laize a tributary to the Orne flows through the commune.