Montaldo Scarampi is a comune (municipality) in the Province of Asti in the Italian region Piedmont, located about southeast of Turin and about southeast of Asti. As of 31 December 2004, it had a population of 704 and an area of .
Montaldo Scarampi borders the following municipalities: Mombercelli, Montegrosso d'Asti, and Rocca d'Arazzo.