1646 in Ireland

Events from the year 1646 in Ireland.

Incumbent

3 March – the title of Earl of Leinster in the Peerage of Ireland is created for Robert Cholmondeley.{{Cite web|title=Cholmondeley, Viscount (I, 1661)|url=http://www.cracroftspeerage.co.uk/cholmondeley1661.htm|access-date=2020-07-26|website=www.cracroftspeerage.co.uk}}
28 March – the first "Ormonde Peace": the Supreme Council of the Irish Catholic Confederation signs an agreement with James Butler, Marquess of Ormonde, as lieutenant of Charles I of England which would procure some rights for Catholics in return for their military support of the royalists in England, but this is renounced by the Confederation's General Assembly.
5 June – the Battle of Benburb, part of the Irish Confederate Wars, takes place in County Tyrone. The forces of Catholic Confederate Ireland under Owen Roe O'Neill secure a decisive victory over a Scottish Covenanter and Anglo-Irish army led by Robert Monro.{{Cite web|title=Battle of Benburb 1646|url=http://oneillcountryhistoricalsociety.com/history/battle-of-benburb/|access-date=2020-07-26|website=O'Neill Country Historical Society|language=en-US}}
29 June – battle at Laught (Leacht), part of the Irish Confederate Wars, between Tadhg Mór and his brother Laughlin Ó Cellaigh (who is killed).

Henry Burkhead's closet drama Cola's Fury, or Lirenda's Misery, based on the Irish Rebellion of 1641, is published in Kilkenny (dated 1645).{{Cite web|title=A tragedy of Cola's furie, or, Lirenda's miserie written by Henry Burkhead, 1645.|url=https://quod.lib.umich.edu/e/eebo/A30300.0001.001|access-date=2020-07-26|website=quod.lib.umich.edu}}