- Arapaho Wyoming, Oklahoma
- Arikara (aka Arikaree or Ree) North Dakota
- Assiniboine (Assiniboin) Montana Fort Peck Indian Reservation is home to Assiniboine and Lakota (Sioux)
- Atsina
- Besawunena
- Blackfoot Montana/Alberta (bands: Kainah or Blood, Siksiki, Northern Peigan, Piegan or Blackfeet)
- Brulé
- Cheyenne Montana, South Dakota; Oklahoma
- Chickasaw Oklahoma
- Comanche Oklahoma
- Crow (Absaroka or Apsáalooke) Montana, South Dakota
- Chippewa Cree, Montana
- Plains Cree Montana
- Dakota
- Gros Ventre
- Hasinai
- Hidatsa North Dakota
- Iowa (Ioway) Kansas, Nebraska, Oklahoma
- Kaw (Kansa) Oklahoma
- Kiowa Oklahoma
- Kitsai
- Lakota (Sioux) South Dakota, North Dakota, Nebraska
- Lipan Apache
- Mandan North Dakota
- Missouri Missouri
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- Nawathinehena
- Oglala Sioux
- Omaha Nebraska
- Mississaugas
- Osage Nation Oklahoma
- Otoe Oklahoma
- Ottawa Michigan; Oklahoma
- Pawnee (Dialects: South Band, Skiri) Oklahoma
- Piegan
- Plains Apache (Kiowa-Apache) Oklahoma
- Ponca Nebraska, Oklahoma
- Quapaw (Arkansas) Arkansas, Oklahoma
- Santee
- Sauk (originally Great Lakes now Kansas, Oklahoma, Iowa
- Saulteaux (Plains Ojibwe)
- Siksika
- Sioux (Lakota, Dakota, Nakota) Minnesota, Nebraska, North Dakota, South Dakota)
- Stoney
- Teton
- Tonkawa Oklahoma
- Tsuu T’ina (Sarcee, Sarsi, Tsuut’ina)
- Wichita Oklahoma [Affiliated Tribes - Wichita, Waco, Tawakoni, Keechi]
- Wyandot Ontario, Michigan
- Yankton
- Yanktonai
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