Litlumvatnet

,, or is a lake on the border of Norway and Sweden. The Norwegian side lies in Rana Municipality in Nordland county and the Swedish side lies in Storuman Municipality in Västerbotten County. The lake lies about 40 km southeast of the town of Mo i Rana. The lake is 5.24 km2 and about 1.8 km2 lies inside Norway and the rest lies in Sweden.