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