1643 in Ireland

Events from the year 1643 in Ireland.

Incumbent

 * Monarch: Charles I

Events

 * March 18 – Irish Confederate Wars: Battle of New Ross: James Butler, Earl of Ormonde, defeats Thomas Preston and a numerically superior Irish Confederate army north of the town of New Ross.
 * June 4 – Confederate Wars: Battle of Funcheon Ford: Catholic Confederation commander James Tuchet, 3rd Earl of Castlehaven's horsemen surprise and rout hundreds of Baron Inchiquin's men near Castlelyons in County Cork.
 * September – Confederate Wars: "Cessation" (i.e. ceasefire) arranged by Ormond places the greater part of Ireland into the hands of the Catholic Confederation.
 * An Calbhach mac Aedh Ó Conchobhair Donn, The Ó Conchubhair Donn, Chief of the Name of the Clan Ó Conchubhair, is popularly inaugurated as King.

Deaths

 * September 15 – Richard Boyle, 1st Earl of Cork, Lord High Treasurer of Ireland (b. 1566)
 * Mícheál Ó Cléirigh, chronicler and chief author of the Annals of the Four Masters (b. c. 1590)