1839 in Ireland
See also: 1838 in Ireland, other events of 1839, 1840 in Ireland
Events
- The Ulster Railway began construction of a railway line between Belfast and Lisburn.
- Marquess of Donegall lays the foundation stone for the Palm House in Belfast Botanic Gardens.
Births
- 6 January - Arthur Gore, 5th Earl of Arran, Anglo-Irish peer and diplomat (d.1901).
- 16 March - John Butler Yeats, artist and father of William Butler Yeats and Jack Butler Yeats (d.1922).
- 30 December - John Todhunter, poet and playwright (d.1916).
- John Pentland Mahaffy, classicist (d.1919).
- Thomas Murphy, recipient of the Victoria Cross for bravery at sea in saving life in a storm off the Andaman Islands in 1867 (d.1900).