- MORGAN, WILLIAM (1750 - 1833), actuary
- MORGAN, WILLIAM GERAINT OLIVER (1920 - 1995), Conservative politician
- MORGAN-OWEN, LLEWELLYN ISAAC GETHIN (1879 - 1960), army administrator
- MORIEN - see MORGAN, OWEN
- MORIEN MÔN - see HUWS, MORIEN MÔN
- MORRALL, JOHN Plas Yolyn - see EDWARDS
- MORRICE, JAMES CORNELIUS (1874 - 1953), priest and Welsh scholar
- MORRIESON, ELIZA CONSTANTIA - see CAMPBELL, ELIZA CONSTANTIA
- MORRIS ap ROBERT - see ROBERTS, MORRIS
- MORRIS, CALEB (1800 - 1865), Congregational minister
- MORRIS, CAREY (1882 - 1968), artist
- MORRIS, DAFYDD - see MORRIS, DAVID
- MORRIS, Sir DANIEL (1844 - 1933), botanist
- MORRIS, DAVID (1630 - 1703), Roman Catholic priest and informer
- MORRIS, DAVID (1744 - 1791), Calvinistic Methodist exhorter, and hymn-writer
- MORRIS, DAVID (1787 - 1858), Calvinistic Methodist preacher
- MORRIS, DAVID (Bardd Einion; 1797? - 1868), poet
- MORRIS, DAVID (Eiddil Gwent; c. 1798 - 1878), author
- MORRIS, DAVID WILLIAM (Marmora; 1823 - 1914), Baptist minister
- MORRIS, EBENEZER (1790 - 1867), cleric
- MORRIS, EBENEZER (1769 - 1825), Calvinistic Methodist minister
- MORRIS, EDWARD (1607 - 1689) Perthi Llwydion, Cerrig-y-drudion, poet and drover
- MORRIS, EDWARD ROWLEY (1828 - 1893), antiquary
- MORRIS, HAYDN (1891 - 1965), musician
- MORRIS, JAMES (1853 - 1914), Calvinistic Methodist minister, and author
- MORRIS, JAN (1926 - 2020), writer
- MORRIS, JANE (1749 - 1833) - see MORRIS, WILLIAM
- MORRIS, JOHN (1813 - 1896), Independent college principal
- MORRIS, JOHN (1706 - 1740), sailor
- MORRIS, Sir JOHN (1745 - 1819), industrialist - see MORRIS,ROBERT
- MORRIS, JOHN EDWARD (1859 - 1933), schoolmaster and historian
- MORRIS, JOHN RICHARD (1879 - 1970), bookseller, writer
- MORRIS, JOHN WILLIAM (1896 - 1979), lawyer and judge
- MORRIS, LEWIS (Llewelyn Ddu o Fôn; 1701 - 1765), poet and scholar
- MORRIS, Sir LEWIS (1833 - 1907), poet and educationist
- MORRIS, LEWIS (1760 - 1855), Calvinistic Methodist exhorter
- MORRIS, MORRIS ap RHISIART (1674 - 1763), farmer and cooper
- MORRIS, PERCY (1893 - 1967), politician and trade unionist
- MORRIS, Sir RHYS HOPKIN (1888 - 1956), politician, stipendiary magistrate, first director of the Welsh Region B.B.C.
- MORRIS, RICHARD (1703 - 1779), founder of the Cymmrodorion Society
- MORRIS, RICHARD ROBERTS (1852 - 1935), Calvinistic Methodist minister, and poet
- MORRIS, ROBERT (d. 1768), industrialist
- MORRIS, ROBERT (1743 - 1797?), barrister - see MORRIS, ROBERT
- MORRIS, ROBERT (fl. 1767-1816), poet - see ROBERTS, ELLIS
- MORRIS, ROBERT DAVID (1871 - 1948), itinerant bookseller and author
- MORRIS, ROBERT PRYS (1831? - 1890), local historian and antiquary; a writer in Welsh and English journals
- MORRIS, ROGER (fl. 1590) Coed-y-talwrn, Llanfair Dyffryn Clwyd, transcriber of manuscripts
- MORRIS, RUPERT HUGH (1843 - 1918), cleric and antiquary
- MORRIS, SILAS (1862 - 1923), principal of the Baptist College, Bangor
- MORRIS, THOMAS (1786 - 1846), Baptist minister