Raudvatnet is a lake in the municipality of Rana in Nordland county, Norway. The European route E12 highway passes along the northern and eastern shores of the lake between the town of Mo i Rana and the border with Sweden. A Red cross hut (Rauvasshytta) is located east of the lake Raudvatnet. Water flows into the lake Raudvatnet primarily from the nearby lake Tverrvatnet to the south. From Raudvatnet, the water flows into the river Tverråga, a tributary to the main river Ranelva.

Rana is a municipality in Nordland county, Norway. It is part of the Helgeland traditional region. The administrative centre of the municipality is the town of Mo i Rana, which houses the National Library of Norway. Other population centers in Rana include Båsmoen, Dunderland, Eiteråga, Flostrand, Hauknes, Mæla, Myklebustad, Nevernes, Røssvoll, Selfors, Skonseng, Storforshei, Utskarpen, and Ytteren.