Poblet Abbey, otherwise the Royal Abbey of Santa Maria de Poblet (Catalan: Reial Monestir de Santa Maria de Poblet), is a Cistercian monastery, founded in 1151, located at the foot of the Prades Mountains, in the comarca of Conca de Barberà, in Catalonia (Spain). It was founded by Cistercian monks from France. The main architect was Arnau Bargués.

This monastery was the first of three sister monasteries, known as the Cistercian triangle, that helped consolidate power in Catalonia in the 12th century. (The other two are Vallbona de les Monges and Santes Creus.)