Notre-Dame-de-Gravenchon (French pronunciation: [nɔtʁə dam də ɡʁavɑ̃ʃɔ̃]) is a former commune in the Seine-Maritime department in the Normandy region in northern France.

[2] A small town with a huge industrial area (Port-Jérome) to the southwest with farming and woodland to the north and east, in the Pays de Caux, situated by the banks of the river Seine, some 20 miles (32 km) east of Le Havre, at the junction of the D81, D373 and D110 roads.

Notre-Dame-de-Gravenchon features a large industrial complex centered around the Seine river.

The industrial area is dominated by Port-Jérôme-Gravenchon Refinery run by Esso.

Notre Dame de Gravenchon is twinned with Street, a village in Somerset, a county in the south west of England and Isny im Allgäu a city in the South of Baden-Würrtemberg, Germany and also Rubano in Northern Italy.