1867 in Wales

Incumbents

• Lord Lieutenant of Anglesey – Henry Paget, 2nd Marquess of Anglesey
• Lord Lieutenant of Brecknockshire – Charles Morgan, 1st Baron Tredegar
• Lord Lieutenant of Caernarvonshire – Edward Douglas-Pennant, 1st Baron Penrhyn
• Lord Lieutenant of Cardiganshire – Edward Pryse
• Lord Lieutenant of Carmarthenshire – John Campbell, 2nd Earl Cawdor
• Lord Lieutenant of Denbighshire – Robert Myddelton Biddulph
• Lord Lieutenant of Flintshire – Sir Stephen Glynne, 9th Baronet
• Lord Lieutenant of Glamorgan – Christopher Rice Mansel Talbot
• Lord Lieutenant of Merionethshire – Edward Lloyd-Mostyn, 2nd Baron Mostyn
• Lord Lieutenant of Monmouthshire – Benjamin Hall, 1st Baron Llanover ; Henry Somerset, 8th Duke of Beaufort
• Lord Lieutenant of Montgomeryshire – Sudeley Hanbury-Tracy, 3rd Baron Sudeley
• Lord Lieutenant of Pembrokeshire – William Edwardes, 3rd Baron Kensington
• Lord Lieutenant of Radnorshire – John Walsh, 1st Baron Ormathwaite
• Bishop of Bangor – James Colquhoun Campbell
• Bishop of Llandaff – Alfred Ollivant
• Bishop of St Asaph – Thomas Vowler Short
• Bishop of St Davids – Connop Thirlwall

Events

• 3 June – The opening of the Anglesey Central Railway to passenger traffic links Amlwch to the rail network for the first time.
• 19 August – The Victoria pier at Rhyl, built at a cost of £23,000, opens to the public.
• 2 September – The Carnarvonshire Railway opens throughout, connecting Carnarvon and Portmadoc.
• 30 September – Mawddwy Railway opens.
• 10 October – Barmouth Bridge across the Mawddach estuary opens to rail traffic, linking Barmouth to the rail network for the first time.
• 26–27 October – Barque Earl of Chester is wrecked off Rhosneigr, Anglesey, with the loss of at least 17 lives.
• 8 November – 178 miners are killed in an accident at Ferndale Colliery, Rhondda.
• date unknown
• *Celtic Congress held at Saint-Brieuc in Brittany.
• *The Bronze Age cairns at Llanmadoc Hill are excavated and finds recorded.

Arts and literature

Awards

• At the National Eisteddfod of Wales held at Carmarthen, a crown is presented for the first time.

New books

• Rhoda Broughton – Cometh Up as a Flower
• Edward Hamer – The Chartist Outbreak at Llanidloes
• Jabez Edmund Jenkins – Egin Awen, yn cynnwys awdlau, cywyddau
• Charles Octavius Swinnerton Morgan - Penhow Castle
• William Thomas (Islwyn) – Caniadau
• Alfred Russel Wallace – The Malay Archipelago
• Charles Wilkins – ''The History of Merthyr Tydfil''

Music

• David Roberts (Alawydd) – ''Llyfr y Psalmau''

Sport

• Boxing – The "Marquess of Queensberry rules", formulated by John Graham Chambers, are published.

Births

• 10 March
• *Sir William James Thomas, 1st baronet, philanthropist, one of the Thomas baronets of Yapton
• *William Llewelyn Williams, politician
• 10 April – Courtenay Morgan, 1st Viscount Tredegar, peer
• 2 May – Eliseus Williams, poet
• 13 May – Frank Brangwyn, artist
• 15 May – Sir Henry Stuart Jones, academic
• 21 May – John Thomas Job, poet
• 26 May – Mary of Teck, member of the British royal family, Princess of Wales 1901–1910
• 29 September – John Richard Williams, poet
• 6 October – Rosser Evans, Wales international rugby player
• 12 October – Lyn Harding, actor
• 2 November – Owen Glynne Jones, mountaineer
• 28 November – James Richard Atkin, judge
• 18 December – David Watts Morgan, Member of Parliament for Rhondda East
• date unknown
• *Mia Arnesby Brown, born Mia Sarah H. Edwards, painter of children's portraits
• *Fred Hutchinson, rugby player

Deaths

• 15 February – Walter Coffin, industrialist, 82
• 18 February – Edward Roberts (Iorwerth Glan Aled), poet, 48
• 27 April – Benjamin Hall, 1st Baron Llanover, industrialist, 64
• 26 May – Thomas Phillips, politician and businessman, 65/66
• 4 August – William Crawshay II, industrialist, 79
• 9 September – John Propert, physician, 74
• 12 September – Robert Fulke Greville, landowner and politician, 67
• 16 November – Thomas Aubrey, Methodist minister, 59
• 1 December – William Thomas, Guardian of Aborigines in Australia, 74