Tunnsjøen is a lake in the municipalities of Røyrvik and Lierne in Nord-Trøndelag county, Norway. The lake lies just south of the large lake Limingen, and just west of the border with Sweden. It is above sea level and has a volume of . The deepest part of the lake is deep. It is the seventh largest lake in Norway.
Tunnsjøen is a lake in the municipalities of Røyrvik and Lierne in Nord-Trøndelag county, Norway. The lake lies just south of the large lake Limingen, and just west of the border with Sweden. It is above sea level and has a volume of . The deepest part of the lake is deep. It is the seventh largest lake in Norway.