The Nlaka'pamux or Nlakapamuk ( ; Salish ), also previously known as the Thompson, Thompson River Salish, Thompson Salish, Thompson River Indians or Thompson River people, and historically as the Klackarpun, Haukamaugh, Knife Indians and Couteau Indians, are an indigenous First Nations people of the Interior Salish language group in southern British Columbia. Their traditional territory includes parts of the North Cascades region of Washington.