Beaubec-la-Rosière (French pronunciation: [bobɛk la ʁozjɛʁ]) is a commune in the Seine-Maritime department in the Normandy region in northern France.

A forestry and farming village in the Pays de Bray, situated some 35 miles (56 km) southeast of Dieppe, at the junction of the D35 and D1314 roads.

Formed by the merger in 1825 of Beaubec-la-Ville, whose original Scandinavian name means ‘’beautiful stream’’ and La Rosière which owes its name to the many reeds of the wetlands.

Founded in 1127 by Hughes de Gournay, the abbey of Bellus-Beccus housed the relics of St Helier, martyred in Jersey in the 6th century.

All that remains are the chapel of St. Ursula and a few traces of the infirmary, the farm and dependencies.