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- Makah Indian Tribe of the Makah Indian Reservation, Washington
- Manchester Band of Pomo Indians of the Manchester Rancheria, California
(previously listed as Manchester Band of Pomo Indians of the Manchester-Point Arena Rancheria, California) - Manzanita Band of Diegueno Mission Indians of the Manzanita Reservation, California
- Mashantucket Pequot Indian Tribe
(previously listed as Mashantucket Pequot Tribe of Connecticut - Mashpee Wampanoag Indian Tribal Council, Inc.
(previously listed as Mashpee Wampanoag Tribe, Massachusetts) - Match-e-be-nash-she-wish Band of Pottawatomi Indians of Michigan
(formerly Gun Lake Indian Tribe)
(formerly Gun Lake Village Band & Ottawa Colony Band of Grand River Ottawa Indians) - Mechoopda Indian Tribe of Chico Rancheria, California
- Menominee Indian Tribe of Wisconsin
- Mesa Grande Band of Diegueno Mission Indians of the Mesa Grande Reservation, California
- Mescalero Apache Tribe of the Mescalero Reservation, New Mexico
- Miami Tribe of Oklahoma
- Miccosukee Tribe of Indians of Florida
- Middletown Rancheria of Pomo Indians of California
- Minnesota Chippewa Tribe, Minnesota
Six component reservations:- Bois Forte Band (Nett Lake)
- Fond du Lac Band
- Grand Portage Band
- Leech Lake Band
- Mille Lacs Band
- White Earth Band
- Mississippi Band of Choctaw Indians
(previously listed as Mississippi Band of Choctaw Indians, Mississippi) - Moapa Band of Paiute Indians of the Moapa River Indian Reservation, Nevada
- Modoc Tribe of Oklahoma
- Mohegan Indian Tribe of Connecticut
- Mooretown Rancheria of Maidu Indians of California
- Morongo Band of Mission Indians, California
(formerly the Morongo Band of Cahuilla Mission Indians of the Morongo Reservation, California) - Muckleshoot Indian Tribe
(previously listed as Muckleshoot Indian Tribe of the Muckleshoot Reservation, Washington)
Read more about this topic: Federally Recognized Tribes