Fort Simpson was a fur trading post established in 1831 by the Hudson's Bay Company (HBC) near the mouth of the Nass River in present-day British Columbia, Canada. In 1834, it was moved to the Tsimpsean Peninsula, about halfway between the Nass River and the Skeena River, and was later referred to as Port Simpson or as the native name Lax Kw'alaams. The fort was part of the HBC's Columbia Department.