1717 in Wales

Incumbents

• Lord Lieutenant of North Wales – Hugh Cholmondeley, 1st Earl of Cholmondeley
• Lord Lieutenant of Glamorgan – vacant until 1729
• Lord Lieutenant of Brecknockshire and Lord Lieutenant of Monmouthshire – John Morgan (of Rhiwpera)
• Lord Lieutenant of Cardiganshire – John Vaughan, 1st Viscount Lisburne
• Lord Lieutenant of Carmarthenshire – vacant until 1755
• Lord Lieutenant of Pembrokeshire – Sir Arthur Owen, 3rd Baronet
• Lord Lieutenant of Radnorshire – Thomas Coningsby, 1st Earl Coningsby
• Bishop of Bangor – Benjamin Hoadly
• Bishop of Llandaff – John Tyler
• Bishop of St Asaph – John Wynne
• Bishop of St Davids – Adam Ottley

Events

• 31 March - In the presence of King George I of Great Britain, Benjamin Hoadly, Bishop of Bangor, gives a sermon on "The Nature of the Kingdom of Christ", beginning the Bangorian Controversy.
• 19 September - Japanning of tinplate begins at Pontypool.
• date unknown
• *The Lower Swansea valley's first copper smelting works is opened by John Lane and John Pollard at Llangyfelach, Landore.
• *Welsh-born David Lloyd is appointed Chief Justice of the supreme court of Pennsylvania.

Arts and literature

New books

English language

• James Davies – Particular Thoughts on Religion
• Benjamin Hoadly – ''The Nature of the Kingdom, or Church of Christ''

Welsh language

• Meddylieu Neillduol ar Grefydd
• Moses Williams – Cofrestr o'r holl lyfrau printiedig gan mwyaf a gyfansoddwyd yn yr iaith Gymraeg

Births

• 11 February - William Williams (Pantycelyn), poet, hymn-writer and religious leader
• 13 November - Prince George William, first child born to the new Prince and Princess of Wales, George and Caroline, since their arrival in Britain

Deaths

• 20 May - John Trevor, politician, 80?
• 3 June - Thomas Watson, former Bishop of St David's, 80
• 30 August - William Lloyd, former Bishop of St Asaph, 90
• date unknown - William Robinson, MP, about 50