- Source: Castro, Lombardy
Castro (Bergamasque: Càster) is a comune (municipality) in the Province of Bergamo in the Italian region of Lombardy, located about 80 kilometres (50 mi) northeast of Milan and about 35 kilometres (22 mi) northeast of Bergamo on the western side of the lake Iseo. As of 31 December 2019, it had a population of 1,292 and an area of 3.5 square kilometres (1.4 sq mi).
Castro borders the following municipalities: Lovere, Pianico, Pisogne, Solto Collina.