Lallio (Bergamasque: ) is a comune (municipality) in the Province of Bergamo in the Italian region of Lombardy, located about northeast of Milan and about southwest of Bergamo. As of 31 December 2004, it had a population of 4,050 and an area of .
Lallio borders the following municipalities: Bergamo, Dalmine, Stezzano, Treviolo.
The company Santini Maglificio Sportivo is based in Lallio, which produces the Santini SMS cycling clothes.
Lallio is twinned with: