Mantello () is a (municipality) in the Province of Sondrio in the Italian region of Lombardy, located about northeast of Milan and about west of Sondrio. As of 31 December 2004, it had a population of 704 and an area of .
Mantello borders the following municipalities: Andalo Valtellino, Cercino, Cino, Cosio Valtellino, Dubino, Rogolo.