Pero (Milanese: ) is a comune (municipality) in the Province of Milan in the Italian region Lombardy, located about northwest of Milan. As of 31 December 2004, it had a population of 10,378 and an area of .
The municipality of Pero contains the frazioni (subdivisions, mainly villages and hamlets) Cerchiate and Cerchiarello.
Pero borders the following municipalities: Rho, Milan.
Pero is linked to Milan and Rho by the underground line M1 (a.k.a. "red line").
Pero is twinned with: