Campoli Appennino is a comune (municipality) in the Province of Frosinone in the Italian region Lazio, located about 100 km east of Rome and about 30 km northeast of Frosinone. As of 31 December 2004, it had a population of 1,803 and an area of 33.4 km².
Campoli Appennino borders the following municipalities: Alvito, Broccostella, Pescasseroli, Pescosolido, Posta Fibreno, Sora, Villavallelonga.
Demographic evolution 
- ^ All demographics and other statistics: Italian statistical institute Istat.