Cortemaggiore (Piacentino: Curtmagiùr) is an Italian comune located in the Province of Piacenza.

The municipality borders Fiorenzuola d'Arda, Villanova sull'Arda, Besenzone, San Pietro in Cerro, Caorso, Pontenure and Cadeo.

In 1949 the Italian entrepreneur Enrico Mattei discovered in Cortemaggiore's subsoil an important oilfield; with this oil a gasoline called Supercortemaggiore was produced, the only one refined from Italian oil.

The municipality's motto is Nihil sanctius quam recta fides cum sororibus associata - "Nothing is holier than a true faith combined with other virtues."

Among the religious edifices in the town are the following: This article on a location in Emilia–Romagna is a stub.