Fjällnäs Castle, Historical villa at the foot of Dundret, Gällivare Municipality, Sweden.

Fjällnäs Castle is a large white-panelled wooden villa at the foot of Dundret in Gällivare Municipality, built in 1888 and given its present form in an 1892 rebuild to drawings by Carl Österman. It is in Swiss style, with sandstone-coloured painted details, two heavy projecting gables enclosing two-storey open galleries between them, and two pointed tower caps on the roof.

Carl Otto Bergman (1828–1901) built the villa in 1888 as a summer residence; he had managed Aktiebolaget Bodträskfors from 1860 to 1887 and kept his office in the house as head of the mining company. A rebuild to Carl Österman's drawings in 1892 gave it its present form. King Oscar II visited in 1894. Riksbyggen bought the estate in 1987 and began restoring it.

The building reflects how industrial leaders of the north expressed their status through refined architecture and design choices. The white exterior and ornamental details served as visible markers of success during the region's mining and timber boom.

The villa stands at the foot of Dundret in Gällivare Municipality, in Norrbotten County. The hotel and restaurant that operated after the 2004 renovation closed in 2011, so the building is not open to visitors as a hotel; it changed owners again in 2019. Riksbyggen built smaller groups of housing units around the villa from 1987, so the surroundings are residential.

The villa was built to impress the MPs and senior officials who visited the Malmberget mine area, and in 1894 King Oscar II stayed here. Italian investors bought it in 2004 and spent 20 million kronor converting it into an apartment hotel and restaurant, which closed after the 2011 change of owner.