Nyhellervatnet is a lake on the border of the municipalities of Hol (in Buskerud county) and Aurland (in Vestland county), Norway. The 16.74-square-kilometre (6.46 sq mi) lake sits at an elevation of 1,438 metres (4,718 ft) above sea level. The lake is located about 30 kilometres (19 mi) southeast of the village of Aurlandsvangen (in Vestland), at the end of the Aurlandsdalen valley. In neighboring Buskerud county, the lake Djupsvatnet lies 10 kilometres (6.2 mi) to the east and Hallingskarvet National Park lies 10 kilometres (6.2 mi) to the south.

• List of lakes in Norway