Vieux-Manoir () is a commune in the Seine-Maritime department in the Normandy region in northern France.
A village of farming and associated light industry situated in the Pays de Bray, some northeast of Rouen near the junction of the D206 with the D122 road. The A28 autoroute forms the western border of the commune. Longuerue-Vieux-Manoir station has rail connections to Rouen and Amiens.