Monastir (Sardinian: Muristenis) is a comune (municipality) in the Province of South Sardinia in the Italian region of Sardinia, located about 20km northwest of Cagliari. As of 2011 census, it had a population of 4,505 inhabitants and an area of 31.8km2. Monastir borders the following municipalities: Nuraminis, San Sperate, Serdiana, Sestu, Ussana, Villasor.
