1799 in Ireland

• Monarch: George III

• 24 January – A motion to debate an Act of Union is defeated in the Irish House of Commons, though it is later approved in the House of Lords
• 9 February – In the worst ever loss-of-life incident on Irish inland waterways (as of {{CURRENTYEAR}}), around 91 people die when a barge crashes against a cutwater at Carrick Bridge and capsizes in Carrick-on-Suir.{{cite book|author-link=Michael Coady (poet)|first=Michael|last=Coady|chapter=The cries at the bridge|title=Full Tide: a miscellany|location=Nenagh|publisher=Relay Books|year=1999|isbn=9780946327270|pages=[https://archive.org/details/fulltidemiscella00coad/page/54 54-60]|url-access=registration|url=https://archive.org/details/fulltidemiscella00coad/page/54}}{{cite web|last=Goggin|first=Brian J. |title=The upper Suir: Carrick to Clonmel |url=https://irishwaterwayshistory.com/abandoned-or-little-used-irish-waterways/waterways-of-the-south-east/the-upper-suir-carrick-to-clonmel/ |publisher=Irish Waterways History|date= 2009-08-18 |access-date=2025-02-06}}
• 15 February – the rebel guerilla leader Michael Dwyer escapes from a gun battle with British troops at Miley Connell's cottage, Dernamuck, in the Glen of Imaal, County Wicklow. (today called the Dwyer–McAllister Cottage){{cite web|title=Dwyer McAllister Cottage|url=http://www.heritageireland.ie/en/midlandseastcoast/DwyerMcAllisterCottage/|work=Heritage Ireland|access-date=2012-07-31|archive-url=https://web.archive.org/web/20080824083223/http://www.heritageireland.ie/en/MidlandsEastCoast/DwyerMcAllisterCottage/|archive-date=2008-08-24|url-status=dead}}
• River Shannon made navigable from Limerick to Killaloe.{{cite book|first=Ruth|last=Delany|title=A celebration of 250 years of Ireland's Inland Waterways|location=Belfast|publisher=Appletree Press|year=1988|isbn=0-86281-200-3|page=51}}

• 28 February – William Dargan, engineer and railway builder (died 1867).
• 9 August – Henry Maxwell, 7th Baron Farnham, politician and peer (died 1868).
• 12 August – Patrick MacDowell, sculptor (died 1870).
• 22 December – Nicholas Callan, priest and scientist (died 1864).
• 26 December – William Kennedy, Scottish poet, journalist and diplomat (died 1871 in France).
• ;Full date unknown
• :*Henry Archer, barrister and entrepreneur in north Wales (died 1863 in France).
• :*Joseph M. Hawkins, Alamo defender (died 1836 in the United States).

• 11 January – Thomas Bermingham, 1st Earl of Louth (born 1717)
• 27 February – Sir John Blackwood, 2nd Baronet, politician (born 1722).
• 29 March – Charles Bingham, 1st Earl of Lucan, High Sheriff of Mayo in 1756 (born 1735)
• 4 June – Philip Woodroffe, surgeon
• 4 August – James Caulfeild, 1st Earl of Charlemont, politician, first President of the Royal Irish Academy, president of the volunteer convention in Dublin, 1783 (born 1728).
• 6 December – John Moore, participant in Irish Rebellion of 1798, proclaimed President of the Government of the Province of Connaught (born 1767).
• 11 December – "Brave" Charles Edward Jennings de Kilmaine, soldier in France (born 1751; died in France).

{{Years in Ireland}}

{{Year in Europe|1799}}

{{reflist}}

Category:Years of the 18th century in Ireland

Ireland

Category:1790s in Ireland