Montresta is a comune (municipality) in the Province of Oristano in the Italian region Sardinia, located about 140 km northwest of Cagliari and about 50 km north of Oristano. As of 31 December 2004, it had a population of 594 and an area of 23.8 km2. In 1746 about fifty Greek families of Maniot descent residing in Cargèse (Corsica) emigrated to Sardinia, where they obtained from Carlo Emanuele III territories in the area of the Villa of San Cristoforo di Montresta to establish their new settlement. Montresta borders the following municipalities: Bosa, Villanova Monteleone, Padria.

Demographic evolution