Caronno Varesino is a comune (municipality) in the Province of Varese in the Italian region Lombardy, located about northwest of Milan and about south of Varese. As of 31 December 2004, it had a population of 4,761 and an area of .
Caronno Varesino borders the following municipalities: Albizzate, Carnago, Castiglione Olona, Castronno, Gornate-Olona, Morazzone, Solbiate Arno.