1900 in Ireland

Events

• 16 January – three lion cubs reared by an Irish red setter go on view at Dublin Zoo.
• 17 January – the different sections of the Nationalist Party meet in the Dublin Mansion House's Oak Room to promote national unity.
• 6 February – the Irish National League and Irish National Federation re-unite within the Irish Parliamentary Party, with John Redmond elected as compromise chairman.
• 28 February – unofficial figures show that the Royal Dublin Fusiliers suffered the most in the Second Boer War.
• 12 March – the 45th Company of the Imperial Yeomanry leave Dublin for service in South Africa.
• 17 March – in celebration of Saint Patrick's Day, the Lord Lieutenant, accompanied by his staff, reviews a military display in the yard of Dublin Castle, followed by dinner and a ball in Saint Patrick's Hall that evening.
• 1 April – the Irish Guards regiment of the British Army is formed by order of Queen Victoria to honour the Irish troops fighting in the Boer War for the British Empire.
• 4 April – Queen Victoria arrives at Kingstown and travels to Dublin where she is greeted by the Lord Mayor and members of the Corporation.
• 7 April – 52,000 children greet Queen Victoria at the Phoenix Park in Dublin.
• 23 April – at a meeting in Loughrea, Douglas Hyde complains of the rapid Anglicisation of the country and the loss of the Irish language.
• 11 May – Edward Carson becomes Solicitor General for England and Wales and is knighted.
• 13 May – the rift in the Irish Parliamentary Party is healed as John Dillon and John Redmond share a platform for the first time in ten years.
• 5 July – the British War Office issues a list of Irish prisoners of the Boers from the 1st Battalion Royal Irish Fusiliers. It names 473 men from eight companies.
• 30 November – Oscar Wilde, dramatist and wit, dies in poverty in Paris aged 46.
• 31 December – ceremonies all over the country mark the closing of the 19th century and the dawning of the 20th.
• Richard J. Ussher and Robert Warren publish The Birds of Ireland.

  Arts and literature

• The Irish Literary Theatre stages three plays at the Gaiety Theatre, Dublin with an English company: Edward Martyn's Maeve; Alice Milligan's The Last Feast of the Fianna; and George Moore's satirical The Bending of the Bough: a comedy in five acts.
• 'Moira O'Neill' publishes Songs of the Glens of Antrim.

  Sport

Football

• ;International
• :24 February Wales 2–0 Ireland
• :3 March Ireland 0–2 Scotland
• :17 March Ireland 0–2 England
• ;Irish League
• :Winners: Belfast Celtic
• ;Irish Cup
• :Winners: Cliftonville 2–1 Bohemians
• Derry Celtic is founded and joins the Irish Football League.

  Births

• 10 January – Harry Kernoff, artist.
• 19 January – Frank Devlin, badminton player.
• January – Michael Donnellan, founder of Clann na Talmhan and TD.
• 4 February – Robert Edgeworth-Johnstone, chemical engineer
• 16 February – John Stewart Collis, writer and pioneer ecologist and his twin Robert Collis, physician and writer.
• 22 February – Seán Ó Faoláin, short story writer.
• 27 February – James Ennis, cricketer.
• 1 March – Nano Reid, painter.
• 6 March – Mark Deering, Fine Gael TD.
• 25 May – John Hunt, expert on mediaeval art.
• 10 July – Paul Vincent Carroll, dramatist.
• 17 July – Paddy Smith, Fianna Fáil TD and longest-serving member of Dáil Éireann .
• 22 July – Michael Davern, Fianna Fáil TD for Tipperary South 1948–1965.
• 20 August – Seosamh Mac Grianna, writer.
• 26 August – Eudie Coughlan, Cork hurler.
• 2 October – Hubert Butler, writer and historian.
• 18 October – Sarah Makem, traditional singer.
• 23 October
• *Paddy Ahern, Cork hurler.
• *Hubert Butler, scholar, essayist and humanitarian.
• 27 October – Peter Kerley, radiologist.
• October – Frank Ryan, tenor.
• 2 November – William Norton, Labour Party leader, TD and Cabinet Minister.
• 19 November – Pamela Hinkson, writer.
• 4 December – Tom Farquharson, soccer player.
• 23 December – Noel Purcell, actor.
• Full date unknown – John Doherty, fiddle player.

  Deaths

• 19 January – William Larminie, poet and folklorist.
• 23 January – Abraham Boulger, soldier, recipient of the Victoria Cross for gallantry in 1857 at Lucknow, India.
• 23 January – James Pearson, soldier, recipient of the Victoria Cross for gallantry in 1858 at Jhansi, India.
• 7 March – Thomas Preston, scientist.
• 16 March – Frederick William Burton, painter.
• 22 March – Thomas Murphy, recipient of the Victoria Cross for bravery at sea in saving life in a storm off the Andaman Islands in 1867.
• 26 April – John Hawkins Hagarty, lawyer, teacher and judge in Canada.
• 2 July – Thomas Farrell, sculptor.
• 12 November – Marcus Daly, businessman in America.
• 30 November – Oscar Wilde, playwright, novelist, poet.
• 14 December – Paddy Ryan, boxer.
• Full date unknown – Thomas Workman, entomologist and arachnologist.