Trontano is a comune (municipality) in the Province of Verbano-Cusio-Ossola in the Italian Piedmont region, located about 120 kilometres (75mi) northeast of Turin and about 25 kilometres (16mi) northwest of Verbania. As of 31 December 2004, it had a population of 1,684 and an area of 58.0 square kilometres (22.4sqmi).