- DAVIES, GWENDOLINE ELIZABETH (1882 - 1951), art collector and benefactress
- DAVIES, GWILYM (1879 - 1955), minister (B), promoter of international understanding, founder of the annual Goodwill Message from the Youth of Wales
- DAVIES, GWILYM ELFED (Baron Davies of Penrhys), (1913 - 1992), Labour politician
- DAVIES, GWILYM PRYS (1923 - 2017), lawyer, politician and language campaigner
- DAVIES, GWYNNE HENTON (1906 - 1998), Old Testament scholar
- DAVIES, HARRY PARR - see PARR-DAVIES, HARRY
- DAVIES, HAYDN GEORGE (1912 - 1993), cricketer
- DAVIES, HENRY (1696? - 1766), Independent minister
- DAVIES, HENRY, doctor - see DAVIES, HENRY
- DAVIES, HENRY (1753 - 1825), Baptist minister
- DAVIES, HENRY JONES - see JONES-DAVIES, HENRY
- DAVIES, HENRY NAUNTON (1827 - 1899), physician - see DAVIES, HENRY
- DAVIES, HENRY REES (1861 - 1940), antiquary
- DAVIES, Sir HENRY WALFORD (1869 - 1941), musician
- DAVIES, HOWEL (c. 1716 - 1770), Methodist cleric
- DAVIES, HUGH (1739 - 1821), cleric and author of Welsh Botanology
- DAVIES, HUGH (Pencerdd Maelor; 1844 - 1907), musician and Calvinistic Methodist minister
- DAVIES, HUGH EMYR (1878 - 1950), minister (Presb.) and poet
- DAVIES, HUGH MORRISTON (1879 - 1965), outstanding pioneer of thoracic surgery in Britain
- DAVIES, HUGH THOMAS (1881 - 1969), musician, writer, and one of the pioneers of Cymdeithas Cerdd Dant Cymru
- DAVIES, HUGH TUDWAL (1847 - 1915), farmer and poet
- DAVIES, HUMFFREY (fl. 1600?-64?), poet
- DAVIES, HUMPHREY (d. 1635), vicar of Darowen, and transcriber of Welsh manuscripts
- DAVIES, HYWEL (1919 - 1965), broadcaster
- DAVIES, IDRIS (1905 - 1953), miner, schoolmaster and poet
- DAVIES, IEUAN REES - see REES-DAVIES, IEUAN
- DAVIES, IFOR (1910 - 1982), Labour politician
- DAVIES, J. GLYN - see DAVIES, JOHN GLYN
- DAVIES, JACOB (1816 - 1849) Ceylon, Baptist missionary
- DAVIES, JAMES (Iaco ap Dewi; 1648 - 1722), translator, copyist and collector of manuscripts
- DAVIES, JAMES (d. 1760), Independent minister
- DAVIES, JAMES (Iago ap Dewi; 1800 - 1869), printer and poet
- DAVIES, JAMES (1767? - 1860), Baptist minister
- DAVIES, JAMES (1765 - 1849) Devauden, schoolmaster
- DAVIES, JAMES (fl. 1758), pastor - see DAVIES, BENJAMIN
- DAVIES, JAMES EIRIAN (1918 - 1998), poet and minister
- DAVIES, JAMES KITCHENER (1902 - 1952), poet, dramatist and nationalist
- DAVIES, JENKIN (1798 - 1842), Calvinistic Methodist minister
- DAVIES, JENKIN ALBAN - see ALBAN DAVIES, JENKIN
- DAVIES, JENNIE EIRIAN (1925 - 1982), journalist
- DAVIES, JOHN (c. 1567 - 1644), one of the greatest of Welsh scholars
- DAVIES, JOHN (1652 - post 1716) Rhiwlas,, genealogist
- DAVIES, JOHN (Brychan; 1784? - 1864), poet, publisher, and promoter of the friendly society movement
- DAVIES, JOHN (1625 - 1693), translator
- DAVIES, JOHN (1795 - 1858), Unitarian minister and schoolmaster
- DAVIES, JOHN (Siôn Dafydd Berson; 1675 - 1769)
- DAVIES, JOHN (d. 1694) Nannau,, 'family bard'
- DAVIES, JOHN (1772 - 1855), school teacher and missionary
- DAVIES, JOHN (c. 1750 - 1821), Methodist cleric
- DAVIES, JOHN (1760 - 1843), Calvinistic Methodist minister