Chickasaw Agency: The Chickasaw Nation

Miami Agency:
Delaware Tribe of Indians
Eastern Shawnee Tribe of Oklahoma
Miami Tribe of Oklahoma
Modoc Nation
Ottawa Tribe of Oklahoma
Peoria Tribe of Indians of Oklahoma
Quapaw Nation
Seneca-Cayuga Nation
Shawnee Tribe
Wyandotte Nation

Okmulgee Agency:
Alabama-Quassarte Tribal Town
Kialegee Tribal Town
Muscogee (Creek) Nation
Thlopthlocco Tribal Town

Osage Agency: The Osage Nation

Talihina Agency: The Choctaw Nation of Oklahoma

Wewoka Agency: The Seminole Nation of Oklahoma