The Secwepemc ( ; Secwepemc: or ), known in English as the Shuswap people , are a First Nations people residing in the Canadian province of British Columbia. Their traditional territory ranges from the eastern Chilcotin Plateau and the Cariboo Plateau southeast through the Thompson Country to Kamloops and the Shuswap Country, and spans the Selkirk Mountains and Big Bend of the Columbia River to include the northern part of the Columbia Valley region. The Secwepemc are perhaps the most numerous of the Interior Salish peoples of British Columbia if based upon the numbers who speak their language.