Cadeo (Piacentino: or ) is a town and comune (municipality) in the province of Piacenza, in the Italian region of Emilia-Romagna, located about northwest of Bologna and about southeast of Piacenza. It has about 5,600 inhabitants. The name is derived from Italian, meaning "House of God". This refers to a time when Cadeo was a stop-over for Christian pilgrims. The photo of the church accompanying this article is actually on the Via Emilia in Roveleto.
Cadeo borders the following municipalities: Carpaneto Piacentino, Cortemaggiore, Fiorenzuola d'Arda, Pontenure. The Municipal Building for Cadeo is located in Roveleto, which is to the south-east on the Via Emilia. Roveleto is also the site of the closest railroad station to Cadeo.
Cadeo is twinned with: