Castel Rigone is a frazione of the comune (municipality) of Passignano sul Trasimeno, Umbria, central Italy.As of 2001, it had 406 inhabitants, and is located 12 km from Passignano. According to tradition, the name derives from that of an Ostrogoth commander, Rigo, who in 543 had set here a base for the siege of Perugia during the Gothic Wars. The village has a late 15th-century church (Madonna del Miracoli), built by a pupil of Bramante.