Piazzolo (Bergamasque: Piassöl) is a comune (municipality) in the Province of Bergamo in the Italian region of Lombardy, located about 70 km northeast of Milan and about 30 km north of Bergamo. As of 31 December 2004, it had a population of 92 and an area of 4.2 km2. Piazzolo borders the following municipalities: Mezzoldo, Moio de' Calvi, Olmo al Brembo, Piazza Brembana, Piazzatorre, Valnegra. In the cemetery is buried Guido Galli an Italian judge killed by the Red Brigades in the 1980s.

Demographic evolution