1800s in Wales
| 1790s | 1810s | Other years in Wales |
| Other events of the decade |
This article is about the particular significance of the decade 1800–1809 to Wales and its people.
Events
Arts and literature
New books
- J. T. Barber - A Tour Throughout South Wales and Monmouthshire
- Thomas Charles - The Welsh Methodists Vindicated
- Edward Davies
- *Celtic Researches on the Origin, Traditions and Languages of the Ancient Britons
- *The Mythology and Rites of the British Druids
- Robert Davies (Bardd Nantglyn)
- *Barddoniaeth
- *Ieithiadur neu Ramadeg Cymraeg
- Thomas Edwards (Twm o'r Nant) - Bannau y Byd
- John Evans - A Tour through part of North Wales in... 1798 and at other times
- John Jones - A Development of... Events calculated to restore the Christian Religion to its... Purity
- Thomas Jones - A Cardiganshire Landlord's Advice to his Tenants
- Richard Llwyd - Beaumaris Bay
- The Myvyrian Archaiology of Wales, vol. 1
- William Ouseley - Epitome of the Ancient History of Persia
- William Owen Pughe - Geiriadur Cymraeg-Saesneg
- Abraham Rees - The New Cyclopaedia, vol. 1
- Thomas Roberts of Llwynrhudol - Amddiffyniad i'r Methodistiaid
- Azariah Shadrach - Allwedd Myfyrdod
- Charles Symmons - Life of Milton
- Richard Warner - Second Walk Through Wales
- Henry Wigstead - ''Remarks on a Tour to North and South Wales: In the Year 1797''
Music
- 1802
- *Edward Jones (Bardd y Brenin) - The Musical and Poetical Relicks of the Welsh Bards, vol. 2
- 1806
- *Casgliad o Hymnau gan mwyaf heb erioed eu hargraffu o'r blaen
- 1807
- *''Anthem y Saint... gan Evan Dafydd''
Sport
- 1802 - Royal Anglesey Yacht Club founded at Beaumaris.
Births
- 1800
- *6 March - Samuel Roberts (S.R.), Radical leader
- *20 June - Edward Douglas-Pennant, 1st Baron Penrhyn
- *1 October - Williams Evans, hymnist
- *29 November - David Griffith (Clwydfardd), poet and archdruid
- *date unknown - James James (Iago Emlyn), minister and poet
- 1801
- *6 February - William Williams (Caledfryn), poet and critic
- *18 November - David Rees, minister and writer
- 1802
- *August - Ebenezer Thomas, poet
- *24 August - William Rowlands (Gwilym Lleyn)
- *8 November
- **Benjamin Hall, 1st Baron Llanover
- **William Rees (Gwilym Hiraethog), poet and author
- *4 December - Calvert Jones, pioneer photographer
- *12 December
- **John Ryland Harris, printer
- **Isaac Williams, poet
- *date unknown - Thomas Robert Jones, founder of the True Ivorites
- 1803
- *10 May - Christopher Rice Mansel Talbot, owner of Margam Castle
- *17 October - Samuel Holland, industrialist
- *date unknown - Owain Meirion, balladeer
- 1806
- *1 February - Jane Williams (Ysgafell), writer
- *21 April - Sir George Cornewall Lewis, statesman
- 1807
- *date unknown - Sir William Milbourne James (judge)
- 1808
- *date unknown - Sir John Henry Scourfield, author
- 1809
- *18 January - John Gwyn Jeffreys, conchologist
- *17 April - Thomas Brigstocke, painter
- *24 May - William Chambers, politician
- *26 May - G. T. Clark, engineer
- *11 August - Robert Thomas (Ap Vychan), writer
- *date unknown - Evan James, lyricist of the Welsh national anthem
Deaths
- 1800
- *14 March - Daines Barrington, antiquary and naturalist
- *May - Evan Hughes (Hughes Fawr), clergyman and author
- 1802
- *28 November - Robert Roberts, preacher
- *30 November - Thomas Williams of Llanidan
- *31 December - Francis Lewis, signatory of the Declaration of American Independence
- *date unknown - Joseph Hoare, academic
- 1804
- *20 September - Josiah Rees, Unitarian minister
- *7 December - Morgan John Rhys, Baptist minister
- 1805
- *August - Ann Griffiths, poet and hymn-writer
- 1807
- *18 July - Thomas Jones, mathematician
- 1808
- *21 January - Richard Pennant, 1st Baron Penrhyn
- 1809
- *April - Charles Francis Greville, founder of Milford Haven
- *28 October - Hugh Pugh, Independent minister
- *28 November - Robert Roberts, preacher