1843 in Wales

Incumbents

• Prince of Wales – Albert Edward
• Princess of Wales – vacant

  Events

• 15 April – Death of William Howells, the notorious "Laleston poisoning" case. His sister and brother-in-law are later acquitted of his murder.
• June – After disturbances in Carmarthenshire, George Rice Trevor, 4th Baron Dynevor, takes on the responsibility for administering order in the county.
• 22 June – The Times sends a special correspondent to South Wales to cover the Rebecca Riots.
• 25 August – "The Great Meeting" to seek political solutions to the problems underlying the Rebecca Riots is held on Mynydd Sylen in the Gwendraeth valley.
• October – Sir Thomas Frankland Lewis is appointed to chair the commission of enquiry into the Rebecca Riots.
• 1 November – The foundation stone for the first Beaumaris Pier is laid.
• 22 December – John Jones, one of the ringleaders of the Rebecca Riots is sentenced to transportation to Australia.
• Pontardawe Tinplate Works established.
• Llewelyn Lewellin becomes Dean of St David's.

  Arts and literature

New books

• Daniel Silvan Evans – Blodeu Ieuainc
• Morris Williams – Y Flwyddyn Eglwysig

  Music

• David Hughes – Y Perorydd Cysegredig
• John Orlando Parry – The Accomplished Young Lady

  Births

• 8 January – John Bryn Roberts, lawyer and politician
• 12 February – John Graham Chambers, sportsman who codified the Marquess of Queensberry rules
• 17 April – Richard John Lloyd Price, sportsman and squire of Rhiwlas
• 12 May – Thomas William Rhys Davids, founder of the Pali Text Society
• 21 May – John Hugh Jones, Roman Catholic priest, translator, and tutor
• 11 June – James Milo Griffith, sculptor
• 18 July – Sir Morgan Morgan, politician
• 4 August – Margaret Townsend Jenkins, social reformer and educator who worked in Chile and Canada
• 30 August – Cyril Flower, 1st Baron Battersea, MP for Brecon 1880–1885
• 12 September – William Morris, Baptist minister
• 17 September – Hugh Williams, historian
• 14 November – Jenkin Lloyd Jones, Unitarian minister in the United States
• 23 November – Daniel Lewis Lloyd, Bishop of Bangor
• 20 December – Frances Hoggan, first British woman to qualify as a doctor
• date unknown – Peter Rees Jones, businessman

  Deaths

• 31 January – William Henry Scourfield, Member of Parliament, 66?
• 26 March – Robert Richford Roberts, Welsh-descended Methodist leader in the United States, 64
• 27 March – Henry Nevill, 2nd Earl of Abergavenny, 88
• 23 April – Sir Robert Vaughan, 2nd Baronet, landowner and politician, 75
• 19 May – Charles James Apperley, sports writer, 64?
• 18 December – Dic Aberdaron, polyglot, 62/63
• date unknown – Mary Evans, first love of Samuel Taylor Coleridge, 73?