Nusco (Irpino: Nùscu) is a town and comune in the province of Avellino (Campania region) in the south of Italy, east of Naples, with a population of around 4,100. It is situated in the mountains between the valleys of the Calore Irpino and Ofanto rivers. It is one of I Borghi più belli d'Italia ("The most beautiful villages of Italy").