Quittengo is a comune (municipality) in the Province of Biella in the Italian region Piedmont, located about 70 km northeast of Turin and about 4 km northwest of Biella. As of 31 December 2004, it had a population of 221 and an area of 8.0 km². Quittengo borders the following municipalities: Campiglia Cervo, Mosso, Sagliano Micca, San Paolo Cervo, Veglio.