1833 in Wales

Incumbents

• Lord Lieutenant of Anglesey – Henry Paget, 1st Marquess of Anglesey
• Lord Lieutenant of Brecknockshire – Henry Somerset, 6th Duke of Beaufort
• Lord Lieutenant of Caernarvonshire – Peter Drummond-Burrell, 22nd Baron Willoughby de Eresby
• Lord Lieutenant of Cardiganshire – William Edward Powell
• Lord Lieutenant of Carmarthenshire – George Rice, 3rd Baron Dynevor
• Lord Lieutenant of Denbighshire – Sir Watkin Williams-Wynn, 5th Baronet
• Lord Lieutenant of Flintshire – Robert Grosvenor, 1st Marquess of Westminster
• Lord Lieutenant of Glamorgan – John Crichton-Stuart, 2nd Marquess of Bute
• Lord Lieutenant of Merionethshire – Sir Watkin Williams-Wynn, 5th Baronet
• Lord Lieutenant of Montgomeryshire – Edward Herbert, 2nd Earl of Powis
• Lord Lieutenant of Pembrokeshire – Sir John Owen, 1st Baronet
• Lord Lieutenant of Radnorshire – George Rodney, 3rd Baron Rodney
• Bishop of Bangor – Christopher Bethell
• Bishop of Llandaff – Edward Copleston
• Bishop of St Asaph – William Carey
• Bishop of St Davids – John Jenkinson

Events

• 29 January – In the United Kingdom general election, Sir John Edwards, 1st Baronet, defeats Tory candidate Panton Corbett to win the enlarged constituency of Montgomery for the Liberals.
• 2 April – Launch of HMS Royal William at Pembroke Dock. This is the first ship to be built there with over 100 guns.
• 26 May – John Etherington Welch Rolls of The Hendre, Monmouth, marries Elizabeth Long, granddaughter of the 7th Earl of Northesk. They are the parents of John Rolls, 1st Baron Llangattock.
• 29 July – Lady Charlotte Bertie marries John Josiah Guest.
• Autumn – The community of Gomer, Ohio, is founded in the United States by Welsh settlers.
• date unknown
• *Isaac Williams becomes Dean of Trinity College, Oxford.
• *Adrian Stephens invents the steam whistle as a safety device for use at Dowlais Ironworks; he fails to patent it.
• *Abbey Cwmhir Hall is constructed on the site of an earlier house.

Arts and literature

• Mold cape discovered.

New books

• Sir Harford Jones Brydges – Dynasty of the Kajars, translated from the original Persian manuscript
• Eliza Constantia Campbell – ''Stories from the History of Wales''

Music

• David James – ''Myfyrdawd''

Births

• 10 January – Richard Davies (Mynyddog), poet
• 23 January – Sir Lewis Morris, poet
• 29 January – David John, Mormon leader
• February – Jacob Thomas, VC recipient
• 6 July – David Hugh Jones, poet
• 12 July – John Hugh Evans, Wesleyan minister and temperance campaigner
• 20 August – General Sir James Hills-Johnes, military leader

Deaths

• 9 January – Sir Thomas Foley, admiral, 75
• 29 January – Thomas Evans, poet, 66
• 6 February – Robert Waithman, lord mayor of London, 69
• 26 February – Richard Jones, minister and writer, 61
• 4 May – William Morgan, scientist and actuary 82
• 16 August – John Edwards-Vaughan, politician, 61
• 1 October – Thomas Beynon, archdeacon of Cardigan and patron of the arts, 88