Lerma is a comune (municipality) in the Province of Alessandria in the Italian region Piedmont, located about 90km southeast of Turin and about 30km south of Alessandria. Lerma borders the following municipalities: Bosio, Casaleggio Boiro, Castelletto d'Orba, Montaldeo, Silvano d'Orba, and Tagliolo Monferrato.
