- HAFINA CLWYD - see COPPACK, MAIR HAFINA
- HAFRENYDD - see WILLIAMS, THOMAS
- HAINES, WILLIAM (1853 - 1922), local historian and bibliographer
- HALL of Cynon Valley, 1st Viscount - see HALL, GEORGE HENRY
- HALL, AUGUSTA (Lady Llanover), (Gwenynen Gwent; 1802 - 1896), patron of Welsh culture and inventor of the Welsh national costume
- HALL, BENJAMIN (1778 - 1817), industrialist
- HALL, BENJAMIN (Lord Llanover), (1802 - 1867), politician and reformer
- HALL, BENJAMIN (1802 - 1867)
- HALL, GEORGE HENRY (first Viscount Hall of Cynon Valley), (1881 - 1965), politician
- HALL, RICHARD (1817 - 1866), poet
- HALL, WILLIAM ANDERSON (born c. 1820), carpenter, fugitive from slavery, author
- HALLAND, DUCHESS of - see BERTIL, PRINCESS LILIAN
- HAM, PETER WILLIAM (1947 - 1975), musician and songwriter
- HAMER, EDWARD (1840 - 1911), antiquary
- HAMER, Sir GEORGE FREDERICK (1885 - 1965), industrialist and public figure
- HAMILTON, Lady (1765 - 1815) - see GREVILLE, CHARLES FRANCIS
- HAMILTON, Sir WILLIAM (1703 - 1803), co-founder of Milford Haven town - see GREVILLE, CHARLES FRANCIS
- HANBURY family, industrialists
- HANBURY, CAPEL (1707 - 1765), industrialist - see HANBURYfamily, industrialists
- HANBURY, JOHN (1744 - 1784), industrialist - see HANBURYfamily, industrialists
- HANBURY-TRACY, CHARLES (1777 - 1858), industrialist - see HANBURYfamily, industrialists
- HANMER family Hanmer, Bettisfield, Fens, Halton, Pentre-pant,
- HANSON, CARL AUGUST (1872 - 1961), first head of the bindery at the National Library of Wales
- HARDING, Sir JOHN DORNEY (1809 - 1868), Queen's Advocate
- HARKER, EDWARD (Isnant; 1866 - 1969), quarryman, poet and preacher (Congl.)
- HARLECH, - see WYNN
- HARLECH, 4th Baron - see ORMSBY-GORE, WILLIAM GEORGE ARTHUR
- HARLEY family (earls of Oxford and Mortimer), Brampton Bryan, Wigmore
- HARRI BACH O GRAIG-Y-GATH - see PARRI, HARRI
- HARRI DDU - see WOOD
- HARRI EVAN WILLIAM - see EVANS, HENRY
- HARRI MASTR (fl. 15th century), poet
- HARRI MYLLIN - see ROWLANDS, HENRY
- HARRI, WILLIAM (Gwilym Garw-dyle; 1763 - 1844), poet
- HARRI SION - see JOHN, HENRY
- HARRI 'SYR' - see HARRI, MASTR
- HARRI, EDWARD (1752? - 1837), poet and weaver
- HARRIES, DAVID (1747 - 1834), musician
- HARRIES, EVAN (1786 - 1861), Calvinistic Methodist minister
- HARRIES, EVAN (d. 1819), Calvinistic Methodist minister - see HARRIES, JOHN
- HARRIES, HENRY (d. 1862), astrologer, medicine-man, and conjurer
- HARRIES, HENRY GWYNNE (1821 - 1849), medical practitioner - see HARRIES, JOHN
- HARRIES, HOWEL - see HARRIS, HOWELL
- HARRIES, HOWELL - see HARRIS, HOWELL
- HARRIES, HYWEL - see HARRIS, HOWELL
- HARRIES, HYWEL (1921 - 1990), art teacher, artist, cartoonist
- HARRIES, ISAAC HARDING (d. c. 1868), Independent minister, and editor of periodicals
- HARRIES, JOHN (1722 - 1788) Ambleston, early Methodist exhorter
- HARRIES, JOHN (c.1785 - 1839), astrologer and medical practitioner
- HARRIS, ANNA MARIA - see HARRIS, JOSEPH