Acuto is a comune (municipality) in the Province of Frosinone in the Italian region Lazio, located about 60 km east of Rome and about 20 km northwest of Frosinone. As of 31 December 2004, it had a population of 1,878 and an area of 13.4 km². Acuto borders the following municipalities: Anagni, Ferentino, Fiuggi, Piglio.