1781 in Ireland

Events from the year 1781 in Ireland.

Incumbent

 * Monarch: George III

Events

 * 8 August – construction of The Custom House, Dublin, to the design of James Gandon, begins.

Arts and literature

 * First annual Granard harp festival.

Births

 * 6 February – John Keane, 1st Baron Keane, British Army Lieutenant-General (died 1844).
 * 25 December? – Sydney Owenson, novelist (died 1859).
 * William Benjamin Sarsfield Taylor, painter (died 1850).

Deaths

 * 26 September – Andrew Lewis, pioneer and surveyor, soldier from Virginia (born 1720).