Bessvatnet is a glacial lake in Vågå Municipality in Innlandet county, Norway.

The 4.7-square-kilometre (1.8 sq mi) lake is located in the Jotunheimen mountain range and also inside the Jotunheimen National Park.

The lake lies just east of the mountain Besshø.

The last element is the finite form of vatn which means 'water' or 'lake'.

This article related to a lake in Innlandet in Norway is a stub.