Varenna is a comune (municipality) on Lake Como in the Province of Lecco in the Italian region Lombardy, located about 60 kilometres (37 mi) north of Milan and about 20 kilometres (12 mi) northwest of Lecco.

Varenna was founded by local fishermen in 769, and was later allied of the commune of Milan. In 1126 it was destroyed by the rival commune of Como, and later received the refugees from the Isola Comacina, who had met the same fate (1169).

Varenna borders the following municipalities: Esino Lario, Lierna, Oliveto Lario, Perledo. The main sights are the Castello di Vezio, a small museum dedicated to the Lariosaurus and a sea reptile from the Middle Triassic period. Across the lake in the province of Como are: Bellagio, Griante and Menaggio.

┈━═☆

It is served by a station on the Tirano–Lecco railway.

┈━═☆

┈━═☆