Ranheim Papirfabrikk AS was a Norwegian industrial company, which ran a paper factory with the same name at Ranheim, Trondheim, Norway. The construction of it started in 1882, and it was opened as Ranheims Cellulosefabrik in 1884 by businessperson and politician Lauritz Jenssen, a son of Lauritz Dorenfeldt Jenssen who had bought the farm Ranheim and started developing industry there. The factory utilized water from the nearby river Vikelva. The factory also utilized an industrial railroad track, running off of the Nordland Line from .