1794 in Ireland

Events from the year 1794 in Ireland.

Incumbent

1 January – Lagan Canal opened throughout from Belfast to Lough Neagh.{{cite book|first=W. A.|last=McCutcheon|title=The Canals of the North of Ireland|location=Newton Abbot|publisher=David and Charles|year=1965|isbn=0-7153-4028-X}}
4 May – Dublin Society of United Irishmen suppressed.{{cite book|editor1=Moody, T. W.|editor2=Martin, F. X.|year=1967|title=The Course of Irish History|publisher=Mercier Press|location=Cork|page=374}}
29 June – physician and poet William Drennan, a leading figure in the Dublin Society of United Irishmen, is tried for seditious libel for circulating a pamphlet Address to the Volunteers in 1792; he is acquitted but withdraws from further direct political commitment.{{cite web|first=I. R.|last=McBride|title=Drennan, William (1754–1820)|work=Oxford Dictionary of National Biography|publisher=Oxford University Press|year=2004|edition=Online|url=http://www.oxforddnb.com/view/article/8046|access-date=2013-08-19|doi=10.1093/ref:odnb/8046}} {{ODNBsub}}
November – Richard Lovell Edgeworth demonstrates a semaphore line from Donaghadee across the Irish Sea to Portpatrick in Scotland.{{cite journal|first=Adrian James|last=Kirwan|title=R. L. Edgeworth and optical telegraphy in Ireland, c.1790–1805|journal=Proceedings of the Royal Irish Academy|location=Dublin|volume=117C|year=2017|pages=209–35}}
Establishment of Ballincollig Gunpowder Mills.
Mary Leadbeater publishes Extracts and Original Anecdotes for the Improvement of Youth anonymously in Dublin.

9 January – Mother Frances Mary Teresa Ball, founder of Irish Branch of the Institute of the Blessed Virgin Mary and Loreto schools (died 1861).
4 March – William Carleton, writer (died 1869).
23 April – Benjamin Holmes, businessman and politician in Quebec (died 1865).
6 May – Price Blackwood, 4th Baron Dufferin and Claneboye, Royal Navy captain (died 1841).
17 May – Anna Brownell Jameson, writer (died 1860).
10 July – William Maginn, journalist and writer (died 1842).
18 July – Feargus O'Connor, political radical and Chartist leader (died 1855 in England)
20 November – Eugene O'Curry, scholar (died 1862).
;Full date unknown
:*Joseph Patrick Haverty, painter (died 1864).
:*Sir Alexander Macdonnell, 1st Baronet, lawyer, civil servant and commissioner of national education in Ireland (died 1875).

7 June – John Browne, 1st Baron Kilmaine, politician (born 1726).
;Full date unknown
:*Richard Robinson, 1st Baron Rokeby, Archbishop of Armagh and founder of the Armagh Observatory (born 1709).