Valganna is a comune (municipality) situated in the Province of Varese within the Lombardy region of northern Italy. It is positioned approximately 60 km northwest of Milan and about 13 km north of the city of Varese.
The name Valganna is derived from a compound of "valley" and Ganna, which refers to one of the villages located within the valley. The municipality's territory includes notable geographic features such as Lago di Ghirla and Lago di Ganna.