Magliano Sabina () is a (municipality) in the Province of Rieti in the Italian region of Latium, at Tiber Valley, located about north of Rome and about west of Rieti. As of 31 December 2004, it had a population of 3,829 and an area of .
Magliano Sabina borders the following municipalities: Calvi dell'Umbria, Civita Castellana, Collevecchio, Gallese, Montebuono, Orte, Otricoli. Its frazione of Foglia is one of I Borghi più belli d'Italia ("The most beautiful villages of Italy").
The Cathedral is also known as the Concattedrale di San Liberatore Vescovo e Martire.