Pettinengo is a comune (municipality) in the Province of Biella in the Italian region Piedmont, located about 60 kilometres (37 mi) northeast of Turin and about 3 kilometres (2 mi) southeast of Biella. As of 31 December 2004, it had a population of 1,567 and an area of 11.5 square kilometres (4.4 sq mi).[3]