← 1820 1819 1818 1817 1816 1821 in Ireland → 1822 1823 1824 1825 1826
Centuries:	17th 18th 19th 20th 21st
Decades:	1800s 1810s 1820s 1830s 1840s
See also:	1821 in the United Kingdom Other events of 1821 List of years in Ireland

Events from the year1821 in Ireland.

• 12 August – 3 September: the newly crowned KingGeorge IV of the United Kingdom lands atHowth to become the first monarch to pay a state visit to Ireland since the 14th century. He stays at theViceregal Lodge inDublin; with his mistressElizabeth Conyngham, Marchioness Conyngham, atSlane Castle; and with Viscount Powerscourt atPowerscourt House. He departs fromDunleary which is renamed Kingstown in his honour.^[1]
• September–November – potato crop fails.^[2]
• 28 December –Sandycove lifeboat disaster – four lifeboatmen drown attempting to rescueEllen of Liverpool.^[3]
• Metal Man seamark erected atRosses Point.
• Loreto Abbey established bySisters of Loreto atRathfarnham.

• 18 January – the Albany New Theatre opens inDublin. In August,King George IV attends a performance, following which it becomes Dublin'ssecond Theatre Royal.^[2]
• John Banim's poemThe Celt's Paradise is published, and his playDamon and Pythias is first performed (at theTheatre Royal, Covent Garden) on 28 May.
• Whitely Stokes publishes a critique ofThomas Malthus's reflections on Ireland:Observations on the population and resources of Ireland, Dublin, Joshua Porter

• 20 January –Dennis Mahony, co-founder of theHerald newspaper inDubuque, Iowa (died1879 in the United States).
• February (possible date) –Robert O'Hara Burke, explorer of Australia (died1861 in Australia).
• 17 February –Lola Montez, born Eliza Rosanna Gilbert, "Spanish dancer" and royal mistress (died1861 in the United States).
• 20 February –Miles Gerard Keon, journalist, novelist, colonial secretary and lecturer (died1875).
• 21 February – "Roaring"Hugh Hanna,Evangelical preacher (died1892).
• 8 March –James Sheridan Muspratt, research chemist and teacher (died1871).
• 28 March –William Howard Russell, journalist (died1907).
• 6 May –Robert O'Hara Burke, explorer of Australia (died1861 in Australia).
• 20 July –Michael Hannan,Archbishop inRoman Catholic Archdiocese of Halifax,Nova Scotia (died1882 in Canada).
• 22 September –John Conness, United States Senator from California, 1863–1869 (died1909 in the United States).
• 18 December –William Connor Magee,Anglican clergyman,Archbishop of York (died1891).
• 21 December –Samuel Haughton, scientific writer (died1897).
• 27 December –Jane Francesca Elgee,later Lady Wilde, poet ("Esperanza"; died1896).
• Date unknown –Joseph Robinson Kirk, sculptor (died1894).

• 6 April –Robert Stewart, 1st Marquess of Londonderry, politician (born1739).
• 15 June –James Cuffe, 1st Baron Tyrawley, peer (born1747).
• 4 October –Edward Hudson, dentist (born1743).
• 15 November –John Barrett, clergyman andHebrew scholar (born1753).

• 1821 in Scotland
• 1821 in Wales

• 1821 in Ireland
• 1820s in Ireland
• Years of the 19th century in Ireland
• 1821 in Europe
• 1821 by country
• 1821 in the United Kingdom

• Articles with short description
• Short description is different from Wikidata