Malgesso is a comune (municipality) in the Province of Varese in the Italian region Lombardy, located about northwest of Milan and about west of Varese. As of 31 December 2004, it had a population of 1,253 and an area of .
Malgesso borders the following municipalities: Bardello, Besozzo, Brebbia, Bregano, Travedona-Monate.