| Nom tribus | Etats |
| Abenaki Indian Center, Inc | New Hampshire |
| Abenaki Nation of New Hampshire | New Hampshire |
| Abenaki Tribe of Vermont | Vermont |
| Accohannock Indian Tribal Association, Inc | Maryland |
| Ahon-to-ays Ojibwa Band (aka Rocky Boy Ojibway Band) | Montana |
| Aka ELNU Koasek Traditional Band of the Abenaki Nation | Vermont |
| Alexander Valley Mishewal Wappo | Californie |
| Alleghenny Nation Indian Center | Ohio |
| Amah Mutsun Band of Ohlone/Costanoan Indians | Californie |
| American Cherokee Confederacy | Georgie |
| American Indian Center of South Carolina | Caroline du Sud |
| Amonsoquath Tribe of Cherokee | Californie |
| Amonsoquath Tribe of Cherokee | Missouri |
| Ani Yvwi Yuchi | Californie |
| Ani-Stohini/Unami Nation | Virginie |
| Antelope Valley Paiute Tribe (aka Antelope Valley Indian Community) | Californie |
| Apalachee Indian Tribe | Louisiane |
| Apalachicola Band of Creek Indians. | Floride |
| Aquidneck Indian Council | Rhode Island |
| Arapaho Tribe of Oklahoma | Oklahoma |
| Arebeka Tribal Town | Oklahoma |
| Assonet Band of Wampanoags | Massachusetts |
| Atahun Shoshones of San Juan Capistrano | Californie |
| Atakapa-Ishak Nation | Louisiane |
| Atakapas Ishak Nation of Souteast Texas and Souuthwest Louisiana | Texas |
| Avogel Nation of Louisiana | Louisiane |
| Avogel, Okla Tasannuk, Tribe/Nation | Louisiane |
| Avoyel-Kaskaskia Tribe of Louisiana | Louisiane |
| The Arista Indian Village | Texas |