Casorzo Monferrato is a comune (municipality) in the Province of Asti in the Italian region Piedmont, located about east of Turin and about northeast of Asti.
Casorzo borders the following municipalities: Altavilla Monferrato, Grana, Grazzano Badoglio, Montemagno, Olivola, Ottiglio, and Vignale Monferrato.
Prior to 2022 it was named Casorzo.