The Kainai Nation is a First Nations band government in southern Alberta, Canada, with a population of 12,800 members in 2015, up from 11,791 in December 2013.

The Blackfoot language, also called Siksiká, often anglicised as Siksika, is an Algonquian language spoken by the Blackfoot or Niitsitapi people, who currently live in the northwestern plains of North America. There are four dialects, three of which are spoken in Alberta, Canada, and one of which is spoken in the United States: Siksiká (Blackfoot), to the southeast of Calgary, Alberta; Kainai, spoken in Alberta between Cardston and Lethbridge; Aapátohsipikani, to the west of Fort MacLeod which is Brocket (Piikani) and Aamsskáápipikani, in northwestern Montana. The name Blackfoot probably comes from the blackened soles of the leather shoes that the people wore.