Calendasco (Piacentino: Calindasch) is a comune (municipality) in the Province of Piacenza in the Italian region Emilia-Romagna, located about 150 km northwest of Bologna and about 9 km northwest of Piacenza. Calendasco was founded along the Via Emilia; entering the town over the bridge over the Trebbia River is a plaque commemorating the Battle of Trebbia (213 BC) where the army of Hannibal defeated the Romans.