The Northwest Territories (NWT; French: Territoires du Nord-Ouest, TNO) is one of three federal territories of Canada. The Northwest Territories entered the Canadian Confederation on July 15th, 1870, but the current borders were formed April 1th, 1999, with the creation of Nunavut.

It had a population of 87,070 as of the 2011 census, showing little change from the 2006 census.

In 1967, as a result of recommendations by the Carrothers Commission, Yellowknife became the capital.

While neighbouring Nunavut is mostly Arctic tundra, the Northwest Territories has a slightly warmer climate and is mostly boreal forest (taiga), although about half of the territory is north of the tree line.