Casanova Elvo is a comune (municipality) in the Province of Vercelli in the Italian region Piedmont, located about 60 kilometres (37 mi) northeast of Turin and about 13 kilometres (8 mi) northwest of Vercelli.

Casanova Elvo borders the following municipalities: Collobiano, Formigliana, Olcenengo, San Germano Vercellese, Santhià, and Villarboit.