Lenno was a comune (municipality) in the Province of Como in the Italian region Lombardy, located about 60 km north of Milan and about 20 km northeast of Como. As of 31 December 2004, it had a population of 1,800 and an area of 9.6 km2. Lenno bordered the following municipalities: Bellagio, Bene Lario, Grandola ed Uniti, Lezzeno, Mezzegra, Ossuccio, Porlezza, Tremezzo. The Comune di Lenno was united to Mezzegra, Ossuccio and Tremezzo to form a single municipality named Comune di Tremezzina: the new administration was formalized after election of the Mayor on 25 May 2014.

Demographic evolution

Twin towns — sister cities

Lenno was twinned with: