The Siksika Nation (Blackfoot: Siksiká; syllabics ᓱᖽᐧᖿ, Blackfoot pronunciation: [sɪksɪˈka]) is a First Nation in southern Alberta, Canada. The name Siksiká comes from the Blackfoot words sik (black) and iká (foot), with a connector s between the two words. The plural form of Siksiká is Siksikáwa. The Siksikáwa are the northernmost of the Niitsítapi (Original People), all of whom speak dialects of Blackfoot, an Algonquian language.
When European explorers travelled west, they most likely met the Siksiká first. The four Niitsítapi nations of the Blackfoot Confederacy are the Siksiká, Káínaa (Kainai or Blood), Aapátohsipikáni (Northern Peigan), and Aamsskáápipikani (South Peigan or Montana Blackfoot). The population of the Siksika Nation is approximately 7,800 people.