Brenna is a comune (municipality) in the Province of Como in the Italian region Lombardy, located about 30 kilometres (19 mi) north of Milan and about 11 kilometres (7 mi) southeast of Como. As of 31 December 2004, it had a population of 1,860 and an area of 4.9 square kilometres (1.9 sq mi).

Brenna borders the following municipalities: Alzate Brianza, Cantù, Carugo, Inverigo, Mariano Comense.

Demographic evolution

Twin towns — sister cities

Brenna is twinned with:

• Láchar, Spain