Ferentillo is a comune, or municipality, situated in the Province of Terni within the Italian region of Umbria. It is geographically positioned approximately 12 kilometers northeast of the city of Terni and about 60 kilometers southeast of Perugia.
As a local administrative division, Ferentillo serves as a primary settlement in its district. The town is characterized by its location within the central Italian landscape, nestled between the larger urban centers of the region.