← 1845 1844 1843 1842 1841 1846 in Ireland → 1847 1848 1849 1850 1851
Centuries:	17th 18th 19th 20th 21st
Decades:	1820s 1830s 1840s 1850s 1860s
See also:	1846 in the United Kingdom Other events of 1846 List of years in Ireland

Events from the year 1846 in Ireland.

• Ongoing – Great Hunger: The first deaths from hunger take place early in the year.^[1] Phytophthora infestans almost totally destroys the summer potato crop and the Famine worsens considerably.^[2] By December a third of a million destitute people are employed on public works.^[2]
• 13 March – Ballinlass incident: eviction of 300 tenants at the village of Ballinlass in County Galway.
• 22 September – the Great Western Steamship Company's SS Great Britain, bound from Liverpool for New York, runs aground in Dundrum Bay (County Down). She lies here for almost a year, protected by temporary measures organised by her designer, I. K. Brunel.^[3]
• Maziere Brady succeeds Sir Edward Sugden as Lord Chancellor of Ireland, an office which he will hold (with short intervals) until 1866.^[4]
• HM Prison Crumlin Road in Belfast is opened with the arrival of the first inmates, who are forced to walk from Carrickfergus Prison in chains.
• The first substantial English translation of the Annals of the Four Masters, made by Owen Connellan, is published.
• The Anglo-Celt newspaper begins weekly publication in Cavan.
• Historian Ruaidhrí Ó Flaithbheartaigh (Roderic O'Flaherty)'s Chorographical description of West or Iar Connacht (1684) is first published.^[5]

• 10 February – Lord Charles Beresford, British admiral (died 1919)
• 13 February – John O'Connor Power, Irish Nationalist politician and Member of Parliament (died 1919).
• 25 March – Michael Davitt, republican, nationalist agrarian agitator, social campaigner, labour leader and Irish National Land League founder (died 1906).
• 27 June – Charles Stewart Parnell, Irish nationalist leader (died 1891).
• 30 June – Frances Margaret Milne, author and librarian (died 1910 in the United States).
• 22 July – Alfred Perceval Graves, writer (died 1931).
• 13 August – Otto Jaffe, twice elected as Irish Unionist Party Lord Mayor of Belfast (died 1929).
• 10 September – John F. Finerty, U.S. Representative from Illinois (died 1908).
• 18 September – Standish James O'Grady, author, journalist and historian (died 1928).
• 23 August – Sir Henry Bellingham, 4th Baronet, politician and barrister (died 1921).
• 9 October – Frank Hugh O'Donnell, writer and nationalist politician (died 1916).
• 18 November – Samuel Cleland Davidson, inventor and engineer (died 1921)

• 3 April – Zozimus (Michael J. Moran), comic poet (b. c. 1794)
• 12 October – Lawrence Kavenagh, bushranger (b. c. 1805)
• exact date unknown – George Darley, poet, novelist and critic (born 1795).

• 1846 in Scotland
• 1846 in Wales