Sandigliano is a comune (municipality) in the Province of Biella in the Italian region Piedmont, located about 50 km northeast of Turin and about 8 km southwest of Biella. As of 31 December 2004, it had a population of 2,834 and an area of 10.2 km². Sandigliano borders the following municipalities: Borriana, Cerrione, Gaglianico, Ponderano, Verrone.