The Pays de Bray is a small (about 750 km²) natural region of France situated to the north-east of Rouen, straddling the French departments of the Seine-Maritime and the Oise (historically divided among the Provinces of Normandy and Picardy since 911, now divided among the administrative regions of Upper Normandy and Picardy). The landscape is of bocage, a land use which arises from its clay soil; suited to the development of pasture for the raising of dairy cattle. It produces famous butters and cheeses such as Neufchâtel.
Etymologically, the name of Bray comes from the Gaulish word braco, which became the Old French Bray, meaning marsh, swamp, or mud. The area appears to be so named as the soil distinguishes it from the neighbouring Pays de Caux; the sticky clay is quite different from the dry, firm chalk of the Pays de Caux.
Viewed geologically, the Pays de Bray is a relatively small eroded anticline along the Bray fault, breaking through rocks on the fringe of the Parisian Basin, which forms the chalk plateaus around it. It is a smaller version of the Weald of Kent and Sussex, but reveals the beds more deeply; down to the Upper Jurassic clay.