1778 in Ireland

Centuries:	16th; 17th; 18th; 19th; 20th;
Decades:	1750s; 1760s; 1770s; 1780s; 1790s;
See also:	Other events of 1778 ; List of years in Ireland

Events from the year 1778 in Ireland.

Incumbent

28 March – Hugh O'Reilly succeeds Daniel O'Reilly as Roman Catholic Bishop of Clogher, an office he will hold until 1801.^[1]
April – the Ladies of Llangollen run away from Ireland to set up a rural household together.
24 April – American Revolutionary War: North Channel Naval Duel: John Paul Jones in USS Ranger captures HMS Drake in the North Channel off Carrickfergus.
Papists Act provides a measure of Catholic Relief: Catholics now have property rights and may intermarry; and restoration of Catholic religious institutions begins.
Charles Vallancey surveys West Cork.

4 March – Robert Emmet, nationalist, rebel against British rule in 1803 (executed 1803).
18 May – Charles Stewart, 3rd Marquess of Londonderry, soldier, politician and nobleman (died 1854).
29 September – Catherine McAuley, nun (died 1841).
15 November – George Canning, 1st Baron Garvagh, politician (died 1840).