Valduggia is a comune (municipality) in the Province of Vercelli in the Italian region Piedmont, located about 90 kilometres (56 mi) northeast of Turin and about 45 kilometres (28 mi) north of Vercelli.

Valduggia borders the following municipalities: Boca, Borgosesia, Cellio con Breia, Gargallo, Grignasco, Madonna del Sasso, Maggiora, Pogno, and Soriso.