Events from the year 1771 in Ireland.

• Monarch: George III

• 7 August – foundation stone of Clifton House, Belfast, the Belfast Charitable Society's poorhouse, is laid.
• October – Achmet Borumborad, con-artist, opens a Turkish Baths on Bachelor's Quay (modern day Bachelor's Walk), Dublin.^[1]
• The first of the Roman Catholic relief bills passes into law, permitting Catholics to reclaim and hold under lease for sixty-one years 50 acres (20 ha) of bog if more than a mile of any city or market town.
• Archbishop Richard Robinson founds the Armagh Public Library.
• William James of Bailieborough emigrates to the Thirteen Colonies of North America where he will make a great fortune in Albany, New York, and become father of Henry James Sr.

• 19 July – Thomas Talbot, soldier and politician in Upper Canada (died 1853).
• 26 October – Juan Mackenna, soldier in Chile (died 1814).
• William Homan, only Dunlum Baronet (died 1852).
• Edward Jordan, rebel, fisherman and pirate in Nova Scotia (executed 1809).
• Edward Kernan, Roman Catholic Bishop of Clogher from 1824 (died 1844).
• Philip Nolan, horse-trader and freebooter (killed 1801 in the United States).
• Approximate date
  • Elizabeth Rebecca Edwin née Richards, actress (died 1854).
  • James Bardin Palmer, land agent, lawyer and politician in Prince Edward Island (died 1833).

• 24 September – Arthur Jones-Nevill, Surveyor General of Ireland and politician (born c.1712).
• 4 November – Charles Lucas, apothecary, physician and radical politician (born 1713).
• 25 November – Sir Richard Butler, 5th Baronet, politician (born 1699).
• 18 December – James O'Brien, politician (born 1701?).