Brebbia is a comune (municipality) in the Province of Varese in the Italian region Lombardy, located about 60 kilometres (37 mi) northwest of Milan and about 14 kilometres (9 mi) west of Varese.

Brebbia borders the following municipalities: Besozzo, Ispra, Malgesso, Travedona-Monate and Cadrezzate.

The main church is St. Peter and Paul Church, Brebbia. It is located in the centre of the town.