Pianengo (Cremasco: ) is a comune (municipality) in the Province of Cremona in the Italian region Lombardy, located about east of Milan and about northwest of Cremona. As of 31 December 2004, it had a population of 2,474 and an area of .
Pianengo borders the following municipalities: Campagnola Cremasca, Casale Cremasco-Vidolasco, Crema, Ricengo, Sergnano.