Viggiù (Vigiǘ in Milanese) is a comune (municipality) in the Province of Varese in the Italian region Lombardy, located about 50 kilometres (31 mi) northwest of Milan and about 8 kilometres (5 mi) northeast of Varese, on the border with Switzerland. As of 31 December 2004, it had a population of 5,148 and an area of 9.3 square kilometres (3.6 sq mi).