- Muscogee (Creek) Nation, Oklahoma3
- Muskie, Edmund S., 1914-19963
- National Disability Council (Great Britain)1
- Nehru, Jawaharlal, 1889-19643
- Nixon, Richard M. (Richard Milhous), 1913-19943
- North, Oliver1
- O'Neill, Tip1
- Oakar, Mary Rose2
- Obama, Barack H. (Barack Hussein), 1936-19823
- Odeh, Alex M. (Alex Michael)1
- Ong, Yoke Lin1
- Ottawa Tribe1
- Overseas Education Fund3
- Palestine Information Office (Washington, D.C.)1
- Peres, Shimon, 1923-20161
- Peterson, Arthur9
- Petraeus, David Howell1
- Pflaum, Irving P. (Irving Peter), 1906-19851
- Poff, Richard H. (Richard Harding), 1923-201113
- Quinn, William Francis, 1919-20061
