- McLaughlin, John J.1
- Mescalero Apache Nation1
- Miami Tribe of Oklahoma4
- Miller, George, III, 1945-1
- Mineta, Norman Yoshio, 1931-20222
- Mink, Patsy T., 1927-20022
- Modoc Tribe of Oklahoma1
- Mollohan, Alan1
- Muscogee (Creek) Nation, Oklahoma4
- Navajo Indians1
- Navajo Tribe of Arizona, New Mexico & Utah2
- Naval Petroleum Reserves in California (U.S.)8
- Nelson, Donald Marr, 1888-19592
- O'Mahoney, Joseph C. (Joseph Christopher), 1884-19621
- Ojibwa Indians2
- Osage Tribe1
- Osage Tribe, Oklahoma6
- Otoe Nation1
- Patterson, Robert Porter, 1891-19522
- Pawnee Indian Tribe of Oklahoma1
