Campoli Appennino (Campanian: Campere) is a comune (municipality) in the Province of Frosinone in the Italian region Lazio, located about 100km east of Rome and about 30km northeast of Frosinone. Campoli Appennino borders the following municipalities: Alvito, Broccostella, Pescasseroli, Pescosolido, Posta Fibreno, Sora, Villavallelonga. It is home to a medieval tower, 25m high, a series of walls, and the "Aqueduct of Nero".