1840s in Wales

	1830s \| 1850s \| Other years in Wales
	Other events of the decade

This article is about the particular significance of the decade 1840–1849 to Wales and its people.

Events

Anne Beale — Traits and Stories of the Welsh Peasantry (1849)
Robert Elis (Cynddelw) — Yr Adgyfodiad (1849)
John Hughes — The Self-Searcher (1848)
John Jenkins — National Education (1848)
Samuel Lewis — Topographical Dictionary of Wales (1849)
John Lloyd
- Poems (1847)
- The English Country Gentleman (1849)
Richard Williams Morgan — Maynooth and St. Asaph (1848)
Edward Parry — Railway Companion from Chester to Holyhead (1848)
Thomas Stephens — The Literature of the Kymry (1849)
Morris Williams (Nicander)
- Y Flwyddyn Eglwysig (1843)
- Llyfr yr Homiliau (1847)

1840
- September 16 — Alfred Thomas, 1st Baron Pontypridd (died 1927)
- November 29 — Rhoda Broughton, novelist (died 1920)
- December 3 — Francis Kilvert, diarist (died 1879)
- December 5 — John E. Jones, governor of Nevada (died 1896)
- December 17 — Matthew Vaughan-Davies, 1st Baron Ystwyth, politician (died 1935)
- date unknown — John Rhŷs, educationist (died 1915)
1841
- January 28 — Sir Henry Morton Stanley, explorer (died 1904)
- May 21 — Joseph Parry, composer (died 1903)
- November 9 — Edward Albert, Prince of Wales (later Edward VII; died 1910)
1842
- June 14 — William Abraham (Mabon), politician (died 1922)
- September 28 — William John Parry, quarrymen's leader (died 1927)
1843
- May 12 — Thomas William Rhys Davids, founder of the Pali Text Society (died 1922)
- December 20 — Frances Hoggan, first British woman to qualify as a doctor (died 1927)
1844
- April 28 — Thomas Jones (Tudno), poet (died 1895)
- July 28 — Gerard Manley Hopkins, Welsh-descended poet (died 1889)
- December 1 — Alexandra of Denmark, Princess of Wales 1901–1910
1845
- February 24 — Alfred Lewis Jones, shipping magnate (died 1909)
- June 21 — Samuel Griffith, Premier of Queensland (died 1920)
- October 10 — Timothy Richard, missionary
1847
- date unknown
  - Daniel James, hymn-writer (died 1920)
  - Llewelyn Kenrick, footballer (died 1933)
1848
- September 18 — Robert Harris, painter (died 1919)
- December 30 — David Jenkins, composer (died 1915)
1849

1841
- June 8 — John Elias, preacher (born 1774)
- date unknown — John Blackwell (Alun), poet (born 1797)
1842
- August 20 — Hussey Vivian, 1st Baron Vivian, relation of the Vivian family of Swansea (born 1775)
1843
- March 26 — Robert Richford Roberts, Welsh-descended Methodist leader in the USA
- March 27 — Henry Nevill, 2nd Earl of Abergavenny (born 1755)
1845
- January 1 — Sir William Nott, military leader (born 1782)
1848
- March 18 — John Crichton-Stuart, 2nd Marquess of Bute, creator of modern Cardiff (born 1793)
- date unknown — Thomas Price (Carnhuanawc), poet and historian (born 1787)
1849
- March 21 — William Sherley Williams, Welsh-descended pioneer
- September 16 — Thomas Jones, missionary