Vallbona Abbey, otherwise the Monastery of Santa Maria de Vallbona (Catalan: Santa Maria de Vallbona de les Monges; Spanish: El Real Monasterio de Santa María de Vallbona),[1][2] is a Cistercian nunnery in Vallbona de les Monges, in the comarca of Urgell, Catalonia, Spain. Founded in the early 12th century, and built between then and the 14th century, it is one of the most important monastic sites in Catalonia. Its church represents an example of transition between Romanesque and Gothic architecture. The abbey was declared a national monument on 3 June 1931.
Together with the monasteries of Poblet and of Santes Creus it forms part of the Cistercian Route.[3]