The Montérolier-Buchy–Saint-Saëns railway is a standard gauge branch line that operated between 1900 and 1953 in the département of Seine-Maritime France. The line ran 10.2 kilometres (6.3 mi) in a roughly north-northwesterly direction beginning in Gare de Montérolier-Buchy (which is located in the commune of Montérolier and is a part of the Amiens–Rouen railway) and terminating in the small town of Saint-Saëns.
