Delebio is a comune in the Province of Sondrio in the Italian region of Lombardy, located about 80 kilometres northeast of Milan and about 30 kilometres west of Sondrio. Delebio borders the following municipalities: Andalo Valtellino, Colico, Dubino, Pagnona, Piantedo, Premana, Rogolo. It was the location of the Battle of Delebio in 1432.