Chiauci is a comune (municipality) in the Province of Isernia in the Italian region Molise, located about northwest of Campobasso and about northeast of Isernia.
Chiauci borders the following municipalities: Civitanova del Sannio, Pescolanciano, Pietrabbondante, Sessano del Molise
Chiauci has a seismic risk of 2 and is in the climate zone E. According official Italian government data just out of the 190 citizens a total of 6 are foreigners.