Fusine is a comune (municipality) in the Province of Sondrio in the Italian region Lombardy, located about 90 kilometres (56 mi) northeast of Milan and about 11 kilometres (7 mi) southwest of Sondrio. As of 31 December 2004, it had a population of 650 and an area of 37.5 square kilometres (14.5 mi2). Its territory was historically part of Carniola.