- NAISH, JOHN (1923 - 1963), author and playwright
- NANNEY family Nannau,
- NANNEY, Maesyneuadd Llandecwyn - see WYNN
- NANNEY, Dolau-gwyn, Meirionnydd - see WYNN
- NANNEY, Nannau - see NANNAU
- NANNEY, DAVID ELLIS (1759 - 1819), attorney-general for North Wales
- NANNEY, RICHARD (1691 - 1767), Evangelical cleric
- NANTLAIS - see WILLIAMS, WILLIAM NANTLAIS
- NASH, DAVID WILLIAM (d. 1876 or 7), antiquary and writer on early Welsh literature
- NASH, JOHN (1752 - 1835), architect
- NASH, RICHARD (Beau Nash; 1674 - 1761)
- NASH-WILLIAMS, VICTOR ERLE (1897 - 1955), archaeologist
- NATHAN DYFED - see REYNOLDS, JONATHAN OWAIN
- NATHAN WYN - see REES, JONATHAN
- NED MÔN - see JONES, EDWARD
- NEFYDD - see ROBERTS, WILLIAM
- NELSON, ROBERT (1656 - 1715), non-juror, supporter of the S.P.C.K., and philanthropist
- NEMNIUS - see NENNIUS
- NEMNIUUS - see NENNIUS
- NENNIUS (fl. c. A.D. 800), monk and antiquary
- NEPEAN, MARY EDITH (1876 - 1960), novelist
- NEST (fl. 1120), princess of Deheubarth
- NEWCOME, RICHARD (1779 - 1857), cleric
- NEWELL, EBENEZER JOSIAH (1853 - 1916), cleric, schoolmaster, and historian
- NEWELL, RICHARD (1785 - 1852), farmer and Calvinistic Methodist preacher
- NEWTON, LILY (1893 - 1981), scientist
- NICANDER - see WILLIAMS, MORRIS
- NICHOLAS, JAMES (1877 - 1963), Baptist minister
- NICHOLAS, JOHN MORGAN (1895 - 1963), musician
- NICHOLAS, THOMAS (1816 - 1879), Congregational minister, theological college tutor, and historian
- NICHOLAS, THOMAS EVAN (Niclas y Glais; 1879 - 1971), poet, minister of religion and advocate for the Communist Party
- NICHOLAS, WILLIAM RHYS (1914 - 1996), minister and hymnwriter
- NICHOLL, Sir JOHN (1759 - 1838), judge
- NICHOLL, JOHN (1797 - 1853)
- NICHOLLS, ERITH GWYN (1875 - 1939), Wales and Cardiff Rugby centre three-quarter
- NICHOLLS, JOHN (1555 - 1584?), controversial theologian
- NICHOLSON, WILLIAM (1844 - 1885), Independent minister
- NICHOLSON, WILLIAM JOHN (1866 - 1943), minister (Congl.)
- NICLAS Y GLAIS - see NICHOLAS, THOMAS EVAN
- NICOLAS, DAFYDD (1705? - 1774), poet
- NIMROD - see APPERLEY, CHARLES JAMES
- NOAKES, GEORGE (1924 - 2008), Archbishop of Wales
- NOEL, DIANA - see BARHAM, DIANA
- NONN (fl. late 5th century), saint
- NONNA Saint - see NONN, Saint
- NONNITA Saint - see NONN, Saint
- NORRIS, CHARLES (1779 - 1858), artist
- NORTH, FREDERICK JOHN (1889 - 1968), geologist, educator, historian of science and museum curator
- NORTH, HERBERT LUCK (1871 - 1941), architect
- NOTT, Sir WILLIAM (1782 - 1845), soldier