Carenno (locally ) is a comune (municipality) in the Province of Lecco in the Italian region Lombardy, located about northeast of Milan and about southeast of Lecco. As of 31 December 2004, it had a population of 1,476 and an area of .
Carenno borders the following municipalities: Calolziocorte, Costa Valle Imagna, Erve, Torre de' Busi, Valsecca.