- JONES, EMYR WYN (1907 - 1999), cardiologist and author
- JONES, ENID WYN (1909 - 1967), a prominent worker in religious, social and medical fields
- JONES, ENOCH ROWLAND (1912 - 1978), euphonium player and singer
- JONES, ERASMUS (1817 - 1909), novelist
- JONES, EVAN (Ieuan Gwynedd; 1820 - 1852), Independent minister, and journalist
- JONES, EVAN (Gurnos; 1840 - 1903), Congregational and Baptist minister, poet, critic, lecturer, and eisteddfod conductor
- JONES, EVAN (1836 - 1915), Calvinistic Methodist minister, and publicist
- JONES, EVAN (1777 - 1819), Baptist minister
- JONES, EVAN (Gwrwst ab Bleddyn Flaidd, Gwrwst; 1793 - 1855), Baptist minister and littérateur
- JONES, EVAN (1790 - 1860), the last of the Usk japanners
- JONES, EVAN (TALFRYN) (1857 - 1935), Baptist minister
- JONES, EVAN (Ieuan Buallt; 1850 - 1928), farmer, and local antiquary
- JONES, EVAN (PAN) (1834 - 1922), Independent minister
- JONES, EVAN, harpist - see JONES, HUGH
- JONES, EVAN (1799 - 1871), poet - see JONES, WILLIAM
- JONES, EVAN DAVID (1903 - 1987), librarian and archivist
- JONES, Sir EVAN DAVIES (1859 - 1949), 1st baronet, of Pentower, Fishguard, civil engineer, Lord Lieutenant of Pembrokeshire
- JONES, EVAN KENFFIG (1863 - 1950), minister (B), social and educational reformer
- JONES, EZZELINA GWENHWYFAR (1921 - 2012), artist and sculptor
- JONES, FRANCES MÔN (1919 - 2000), harpist and teacher
- JONES, FRANCIS WYNN (1898 - 1970), statistician and writer
- JONES, FRED (1877 - 1948), Independent minister - see JONES
- JONES, FREDERICK CADWALADR (1877 - 1948), Independent minister - see JONES
- JONES, GARETH RICHARD VAUGHAN (1905 - 1935), journalist
- JONES, GARETH RICHARD VAUGHAN (1905 - 1935), linguist and journalist
- JONES, GEORGE DANIEL (1877 - 1955), master printer
- JONES, GLADYS MAY (1899 - 1960), pianist, composer and producer of light programmes on radio
- JONES, GLANVILLE REES JEFFREYS (1923 - 1996), historical geographer
- JONES, GLYN - see JONES, MORGAN GLYNDWR
- JONES, GRIFFITH (1683 - 1761), cleric and educational reformer
- JONES, GRIFFITH (1808 - 1886), Calvinistic Methodist minister
- JONES, GRIFFITH (Glan Menai; 1836 - 1906), schoolmaster and author
- JONES, GRIFFITH ARTHUR (1827 - 1906), cleric
- JONES, GRIFFITH HARTWELL (1859 - 1944), cleric and historian
- JONES, GRIFFITH HUGH (Gutyn Arfon; 1849 - 1919), musician
- JONES, GRIFFITH RHYS (Caradog; 1834 - 1897), conductor of a once well-known South Wales choir, 'Côr Caradog'
- JONES, GWENAN (1889 - 1971), educationalist and author
- JONES, GWILYM CERI (1897 - 1963), minister (Presb.) and poet
- JONES, GWILYM CLEATON (1875 - 1961) Cape Town, Johannesburg, bank manager
- JONES, GWILYM EIRWYN (EIRWYN PONTSHÂN; 1922 - 1994), carpenter, entertainer, nationalist
- JONES, GWILYM GWALCHMAI (1921 - 1970), musician
- JONES, GWILYM RICHARD (Gwilym Aman; 1874 - 1953), musician, conductor of choirs and singing festivals, hymnist
- JONES, GWILYM THOMAS (1908 - 1956), solicitor and administrator
- JONES, HARRI - see JONES, THOMAS HENRY
- JONES, HARRY LONGUEVILLE (1806 - 1870), archaeologist and educationalist
- JONES, HARRY LONGUEVILLE (1806 - 1870)
- JONES, Sir HENRY (1852 - 1922), philosopher
- JONES, HENRY (d. 1592), civil lawyer
- JONES, HENRY, deputy governor of Dublin - see JONES, JOHN
- JONES, HENRY (1605 - 1682), pioneer of Gaelic studies - see JONES, MICHAEL