Moasca is a comune (municipality) in the Province of Asti in the Italian region Piedmont, located about 60 km southeast of Turin and about 15 km southeast of Asti. As of 31 December 2004, it had a population of 422 and an area of 4.1 km². Moasca borders the following municipalities: Agliano Terme, Calosso, Canelli, Castelnuovo Calcea, and San Marzano Oliveto.