(1855-1912) was a Norwegian painter. Nils Hansteen was born in Mo i Rana, in the county of Nordland, Norway. He attended the painting school of Knud Bergslien from 1873 and Peder Thurmann Cappelen (1874-1975). He later studied under Hans Gude in Karlsruhe from 1876 to 1877. He then lived in Munich (1877-1880), Italy (1880-1881) and Copenhagen (1887-1892). He was known principally as a landscape and marine painter. He painted in a naturalistic style, with motifs from marine and forest environments. Two of his paintings are owned by the National Gallery of Norway.