Monte Castello di Vibio is a comune in the Province of Perugia in the Italian region Umbria, located about 30 kilometres south of Perugia. Monte Castello di Vibio borders the following municipalities: Fratta Todina, San Venanzo, Todi. It is a medieval, 15th century walled village of central Italy and sits in the Umbrian Hillside above the Tiber Valley. It is one of I Borghi più belli d'Italia.