Cavallasca was a comune (municipality) in the Province of Como in the Italian region Lombardy, located about 40 kilometres (25 mi) north of Milan and about 4 kilometres (2 mi) west of Como, on the border with Switzerland. It's a frazione of San Fermo della Battaglia since 2017. As of 31 December 2004, it had a population of 2,816 and an area of 2.7 square kilometres (1.0 mi²).