Ferriere is a comune in the Province of Piacenza in the Italian region Emilia-Romagna, located about 150 kilometres west of Bologna and about 45 kilometres southwest of Piacenza, in the Val Nure of the Ligurian Apennines. Ferriere borders the following municipalities: Bardi, Bedonia, Cerignale, Coli, Corte Brugnatella, Farini, Ottone, Rezzoaglio, Santo Stefano d'Aveto.