Coli (; Piacentino: ) is a comune (municipality) in the Province of Piacenza in the Italian region Emilia-Romagna, located about west of Bologna and about southwest of Piacenza. As of 31 December 2004, it had a population of 1,030 and an area of .
The municipality of Coli contains the frazione (subdivision) Aglio.
Coli borders the following municipalities: Bettola, Bobbio, Corte Brugnatella, Farini, Ferriere, Travo.