1817 in Wales

Centuries:	17th; 18th; 19th; 20th; 21st;
Decades:	1790s; 1800s; 1810s; 1820s; 1830s;
See also:	List of years in Wales; 1817 in The United Kingdom Ireland Scotland

This article is about the particular significance of the year 1817 to Wales and its people.

Incumbents

January - Riots break out in Amlwch over food prices.
22 July - Windham Sadler succeeds in crossing the Irish Sea by hot air balloon, landing near Holyhead.
October John Gibson arrives in Rome to study sculpture with help from Antonio Canova.
6 December - Joseph Tregelles Price advertises Neath Abbey ironworks for sale.
Lewis Weston Dillwyn retires from managing the Cambrian Pottery at Swansea.
Richard Fothergill retires from his role in managing the Tredegar ironworks with Samuel Homfray.
Joseph Harris (Gomer) launches the unsuccessful periodical, Greal y Bedyddwyr.
Sir Thomas Frankland Lewis drafts the report on the Poor Law which brings its abuses to the attention of the public.
Construction work commences on the first chapel in Tywyn.
Approximate date - Britain's longest tramroad tunnel is opened at Pwll du near Blaenavon. The Pwll Du Tunnel is more than a mile (2400 m) in length. Begun as a mineral adit, at this time it carries a horse-drawn double track plateway of approximately 2 ft (600 mm) gauge carrying material for Blaenavon Ironworks; next summer it will be incorporated in Thomas Hill's Tramroad, connecting to the Monmouthshire and Brecon Canal.^[1]

Catherine Hutton - The Welsh Mountaineer
John Thomas (Eos Gwynedd) - Annerch Plant a Rhieni oddi ar farwolaeth William Thomas mab Lewis Thomas, Llanrwst

14 July - Robert Williams composes the famous hymn-tune Llanfair (formerly named Bethel).