Famnvatnet (Southern Sami:Faepmiejaevrie) is a lake in the municipality of Hattfjelldal in Nordland county, Norway. The lake is located about 7 kilometres (4.3mi) east of Røssvatnet and about 7.5 kilometres (4.7mi) west of the border with Sweden. The nearby lake Krutvatnet lies about 9 kilometres (5.6mi) to the south.