Encyclopedias, Almanacs, Transcripts, and Maps
- Nusdorffer, Bernardo (1686–1762)
- Nussbaum, Martha (1947–)
- Nuun Magazine
- Nuʿaymi Family, al-
- Nyad, Diana
- Nyakyusa and Ngonde
- Nyamwezi
- Nyamwezi and Sukuma
- Nyinba
- O'Brien, (William) Parry, Jr.
- O'Brien, Lawrence Francis, Jr. ("Larry")
- O'Donnell, Guillermo (1936–)
- O'Donojú, Juan (1762–1821)
- O'Gorman, Camila (1828–1848)
- O'Gorman, Edmundo (1906–1995)
- O'Gorman, Juan (1905–1982)
- O'Hair, Madalyn Murray
- O'Higgins, Ambrosio (1720–1801)
- O'Higgins, Bernardo (1778–1842)
- O'Higgins, Pablo (1904–1983)