Cerignale (, locally Sergnâ; ) is a comune (municipality) in the Province of Piacenza in the Italian region Emilia-Romagna, located about 160 km west of Bologna and about 50 km southwest of Piacenza. As of 31 December 2004, it had a population of 197 and an area of 31.5 km2. The municipality of Cerignale contains the frazioni (subdivisions, mainly villages and hamlets) Cà d'Abrà, Cariseto, Carisasca, Casale, Castello, La Serra, Lisore, Loc. Madonna, Oneto, Ponte Organasco, Rovereto, Santa Maria, Selva, and Zermogliana. Cerignale borders the following municipalities: Brallo di Pregola, Corte Brugnatella, Ferriere, Ottone, Zerba.

Demographic evolution