Sainte-Croix-sur-Buchy (, literally Sainte-Croix on Buchy) is a commune in the Seine-Maritime department in the Normandy region in northern France.
The inhabitants of the town of Sainte-Croix-sur-Buchy are called Saint-Cruciens, Saint-Cruciennes in French.
A farming village situated in the Pays de Bray, some northeast of Rouen at the junction of the D7, D90, D93 and the D98 roads.