Tl'azt'en Nation is an Indian band located along the north shore of Stuart Lake in the northern interior of British Columbia. The two main villages belonging to Tl'azt'en Nation are Tache (often spelled Tachie in English), 60 km northwest of Fort St. James and Binche (often spelled Pinchie in English), 40 km northwest of Fort St. James. The small settlements of Middle River on Trembleur Lake and Grand Rapids, along the Tache River between Stuart Lake and Trembleur Lake also belong to Tl'azt'en Nation. The main administrative offices are in Tache, as are the elementary school, daycare, Head Start, health and RCMP offices. The village of Portage (in Carrier Yekooche) once belonged to Tla'zt'en Nation but separated in 1994. Prior to 1988 Tl'azt'en Nation was known as the Stuart-Trembleur band. Tl'azt'en Nation belongs to the Carrier Sekani Tribal Council.
The people of Tl'azt'en Nation are called Dakelh (pronounced [tákʰɛɬ]) in their own language, Carrier in English. Tl'azt'en means "person of the edge of the bay" in the Dakelh language. Approximately 1,400 people are members of Tl'azt'en Nation. Of these, roughly 600 live off reserve.
Tl'azt'en Nation holds Tree Farm License 42 and operates a logging company, Tanizul Timber. It manages the John Prince Research Forest jointly with the University of Northern British Columbia.