Gitxsan (also spelled Gitksan) are an indigenous people of Canada. Their name means "people of" (Git) "the River of Mist" (Xsan). Their territory encompasses approximately 20,000 square miles of land, from the basin of the upper Skeena River from about Legate Creek to the Skeena's headwaters and its surrounding tributaries.

Their culture is part of the civilization of the Pacific Northwest Coast, although their territory lies in the Interior rather than on the Coast. Their neighbors to the west are the Tsimshian (Coastal Tsimshian) while to the east their neighbors are the Athapaskan people, with whom they have a long and deep relationship and shared political and cultural community.

According to the Gitxsan Tribe website, "the Wilp and clan are the two most important units of society. A person is born into a particular Wilp and clan. The Gitxsan have a matrilineal system with House members tracing lineage through their mother's side. All Gitxsan belong to a Wilp (House group), which is the basic unit for social, economic and political purposes."