Otrøvatnet (historic name: Støgovatnet) is a lake in Vang Municipality in Innlandet county, Norway. The 2-square-kilometre (0.77 sq mi) lake lies in the Filefjell area, about 2 kilometres (1.2 mi) to the southwest of the village of Tyinkrysset. The European route E16 highway passes through the 5-kilometre (3.1 mi) long Filefjell Tunnel in the mountain just north of the lake.

• List of lakes in Norway