Paruzzaro is a comune (municipality) in the Province of Novara in the Italian region of Piedmont, located about 100 kilometres (62Â mi) northeast of Turin and about 30 kilometres (19Â mi) north of Novara.
Paruzzaro borders the following municipalities: Arona, Gattico-Veruno, Invorio, and Oleggio Castello. The municipal territory is home to the Romanesque church of San Marcello (late 10th-early 11th century). There is a fresco cycle by 15th–16th-century local artists in the church. Another noteworthy monument is the church of San Siro.