1646 in Ireland

Incumbent

• Monarch: Charles I

  Events

• 3 March – the title of Earl of Leinster in the Peerage of Ireland is created for Robert Cholmondeley.
• 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.
• 29 June – battle at Laught, part of the Irish Confederate Wars, between Tadhg Mór and his brother Laughlin Ó Cellaigh.

  Arts and literature

• Henry Burkhead's closet drama Cola's Fury, or Lirenda's Misery, based on the Irish Rebellion of 1641, is published in Kilkenny.

  Births

• 24 August – Roger Boyle, 2nd Earl of Orrery, politician
• John Davys, politician
• Antoine Hamilton, author

  Deaths

• 29 June – Laughlin Ó Cellaigh, chief.