The Kainai Nation ( ; , , or ), also known as Blood Tribe, is a First Nations band government in southern Alberta, Canada, with a population of 12,965 members in 2024, up from 11,791 in December 2013.

Akáínaa translates directly to 'many chief' (from aká, 'many' and nínaa, 'chief') while Káína translates directly to 'many chief people'. The enemy Plains Cree call the