Niingsvatnet

or is a Norwegian lake that lies high in the mountains on the border of two municipalities: Evenes in Nordland county and Tjeldsund in Troms county.

The water from the lake flows through a pipe down to the hydroelectric powerstation near the village of Bogen in Evenes. The powerstation is owned by Evenes Kraftforsyning and is situated at almost 500 m lower than the lake Niingsvatnet. The water from the powerstation then flows into the Strandvatnet lake. A short river goes from Strandvatnet past the village of Bogen to the Ofotfjord.