1640 in Ireland

Events from the year 1640 in Ireland.

Incumbent

 * Monarch: Charles I

Events

 * 5 December – John Atherton, Church of Ireland Bishop of Waterford and Lismore, and his proctor are executed on a charge of buggery, on Saint Stephen's Green, Dublin.
 * Approximate date – Dubhaltach Mac Fhirbhisigh transcribes the only surviving copy of the Chronicon Scotorum.

Arts and literature

 * 17 March (Saint Patrick's Day) – Henry Burnell's play Landgartha premieres at the Werburgh Street Theatre in Dublin. It is one of the earliest dramatic works from a native Irish playwright.
 * James Shirley's play Saint Patrick for Ireland is published. The author returns to England around 16 April.

Births

 * 29 June – Elizabeth Stanhope, Countess of Chesterfield (d. 1665 in England)
 * Thomas Beecher, politician and soldier (d. 1709)
 * Charles Molloy, lawyer (d. 1690)
 * Approximate date
 * Thomas Knox, politician (d. 1728)
 * Philip Og O'Reilly, politician (d. 1703)

Deaths

 * 5 December – John Atherton, Bishop of Waterford and Lismore (b. 1598)