Montiglio Monferrato is a comune in the Province of Asti in the Italian region Piedmont, located in the Valle Versa about 30 kilometres (19 mi) east of Turin and about 20 kilometres (12 mi) northwest of Asti. It was created in 1998 by combining the three communes of Colcavagno, Montiglio and Scandeluzza. The fourth principal population centre is the village of Rinco; this also was a commune in its own right until 1916 when it was absorbed by Scandeluzza.