Events from the year 1802 in Ireland.

• First Christian Brothers' school founded by Edmund Rice in Waterford.^[1]
• Cork Fever Hospital and House of Recovery founded by Dr. John Milner Barry in Cork.^[2]
• Linen Hall Library moves into permanent premises in the White Linen Hall in Belfast.
• May – Amelia, commanded by William Proby, Lord Proby sails to Cork, Waterford and Dublin to land 150 discharged seaman.

• Henry Boyd completes the first full English translation of Dante's Divine Comedy.
• A collection of Irish language religious verse by Tadhg Gaelach Ó Súilleabháin (died 1795), Timothy O'Sullivan's Pious Miscellany, is published in Clonmel.

• 18 April – Robert Patterson, businessman and naturalist (died 1872).
• 24 May – Robert Baldwin Sullivan, lawyer, judge, and politician in Canada, second Mayor of Toronto (died 1853).
• 12 December – Robert Templeton, naturalist, artist and entomologist (died 1892).
• Juan Galindo, born John Galindo, fighter for Central American independence and explorer (killed in action 1839 in Honduras)

• 28 January – Joseph Wall, army officer, colonial governor and murderer (born 1737)
• 2 February – Armar Lowry-Corry, 1st Earl Belmore, politician and High Sheriff (born 1740).
• 30 March – Aedanus Burke, soldier, judge, and United States Representative from South Carolina (born 1743).
• 20 July – Isaac Barré, soldier and politician (born 1726).
• 24 October – John Ramage, artist (born 1748).

• 1802 in Scotland
• 1802 in Wales