The Ktunaxa ( ; Kutenai pron. ), also known as Kutenai , Kootenay (predominant spelling in Canada) and Kootenai (predominant spelling in the United States), are an indigenous people of North America. There are four bands that form the Ktunaxa Nation and the historic allied and through intermarriage kindred Shuswap Indian Band in British Columbia, in Montana together with the Bitterroot Salish (also known as Flathead) and Upper Pend d'Oreilles they are part of the Confederated Salish and Kootenai Tribes of the Flathead Nation. There are also the Kootenai Tribe of Idaho in Idaho and small populations in Washington in the United States, where they are part of the Confederated Tribes of the Colville Reservation.

The Kootenai Tribe of Idaho is a federally recognized tribes of Lower Kootenai people. They are an Indigenous people of the Northwest Plateau.