Dongo (Comasco: Dongh [ˈdũːk]) is a comune in the Province of Como in the Italian region Lombardy. It lies on the northwestern shore of Lake Como between Gravedona and Musso at the mouth of the Albano. It is 70 kilometres (43 mi) north of Milan and about 40 kilometres (25 mi) northeast of Como.

It was in Dongo, on 27 April 1945, that Benito Mussolini and other fascists, fleeing from Milan towards Valtellina, were captured by Urbano Lazzaro and other partisans.

Dongo borders the following municipalities: Colico , Consiglio di Rumo , Garzeno , Germasino , Musso, Pianello del Lario, Stazzona.

The Palazzo del Vescovo (Palace of the Bishop) was erected in the 17th century by the family of the Marquis Cossoni.