Veglio is a comune (municipality) in the province of Biella in the Italian region Piedmont, located about 70 kilometres (43 mi) northeast of Turin and about 8 kilometres (5 mi) northeast of Biella. As of 31 December 2004, it had a population of 643 and an area of 6.8 square kilometres (2.6 sq mi).

Veglio borders the following municipalities: Bioglio, Camandona, Mosso, Pettinengo, Piatto, Quittengo, Sagliano Micca, Tavigliano, Valle Mosso.