Monistrol de Montserrat is a municipality in Bages county in Catalonia, Spain. The municipality includes the southern two-thirds of the massif of Montserrat and the famous Benedictine monastery of the same name. The town, known as Montserrat-Vila, is situated on the eastern flank of the massif above the valley of the Llobregat river: it is connected with the monastery and with the railway station in the valley by the Montserrat Rack Railway.