Magliano Sabina is a comune (municipality) in the Province of Rieti in the Italian region of Latium, at Tiber Valley, located about 50 kilometres (31 mi) north of Rome and about 30 kilometres (19 mi) west of Rieti. As of 31 December 2004, it had a population of 3,829 and an area of 43.7 square kilometres (16.9 sq mi).