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.

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