Anthon Bernhard Elias Nilsen (1855–1936) was a Norwegian businessman and politician for the Conservative Party. He also wrote novels, under the pseudonym Elias Kræmmer.
He was born in Svelvik. A small town, Svelvik nonetheless played an important role, being the nearest port of the larger town Drammen when the Drammensfjord inlet was frozen over during the winter. Nilsen later moved to Drammen, and in 1879 he established a company to export pulp and paper products as well as lumber.