1904 in Ireland

Events

• 26 April – Edward VII and Queen Alexandra arrive at Kingstown. The royal couple attend the Punchestown Races for the day.
• 2 May – the King and Queen travel to Waterford where they stay at Lismore Castle, home of the Duke of Devonshire. Thomas Horgan of Youghal makes the first known film in Ireland of this event.
• 4 May – last day of royal visit to Ireland.
• 2 June – nave of St Anne’s Cathedral, Belfast, is consecrated.
• 27 June – second Fastnet Rock lighthouse first lit.
• 28 June – Danish liner is wrecked on Helen's Reef off Rockall with the loss of 635 lives.
• 24 July – St Patrick's Cathedral, Armagh consecrated.
• Construction of Government Buildings, Merrion Street, Dublin, starts.
• Start of "Limerick Pogrom".
• First "steamboat ladies", female students at the women's colleges of the Universities of Oxford and Cambridge, are awarded ad eundem degrees by Trinity College, Dublin, at a time when their own universities refuse to confer degrees upon women.
• First woman in Trinity College, Dublin when Isabel Marion Weir Johnston begins to attend.

  Arts and literature

• 22 January – baritone Harry Plunket Greene makes his first gramophone recordings.
• 25 February – J. M. Synge's tragedy Riders to the Sea is first performed at the Molesworth Hall, Dublin, by the Irish National Theatre Society.
• 16 May – James Joyce wins a prize for singing at a Feis Ceoil held at the Antient Concert Rooms in Great Brunswick Street, Dublin.
• 16 June – the original "Bloomsday", the day James Joyce first walks out with Nora Barnacle, to the Dublin suburb of Ringsend, and on which the action of his novel Ulysses is set.
• 1 September – the Leinster School of Music is opened in 34 Harcourt Street, Dublin, by Samuel Myerscough. The school becomes one of examining bodies in Ireland for music and drama, moving to Griffith College, Dublin.
• 1 November – George Bernard Shaw's comedy about Ireland, John Bull's Other Island, opens at the Royal Court Theatre, London, after W. B. Yeats rejects it for the Abbey Theatre.
• 27 December – the Irish National Theatre Society opens to the public in Dublin for the first time. The bill consists of three one-act plays, On Baile's Strand and Cathleen Ní Houlihan by Yeats and Spreading the News by Lady Gregory.
• The Ulster Literary Theatre is established.
• Lady Gregory publishes Gods and Fighting Men, a retelling of Irish mythology in English.
• 'Æ' publishes The Divine Vision, and Other Poems.
• James Joyce's story "Eveline" is published.
• Arthur Griffith's The Resurrection of Hungary is published.
• Peadar Ua Laoghaire's story 's story "The Charming of Estercel" is published.

  Sport

Camogie

• 17 July – first ever public game of camogie played, between Dublin teams Craobh an Chéitinnigh and Cúchulainns at a Feis at the Meath agricultural showground in Navan.

  Football

• ;International
• :12 March Ireland 1–3 England
• :21 March Wales 0–1 Ireland
• :26 March Ireland 1–1 Scotland
• ;Irish League
• :Winners: Linfield
• ;Irish Cup
• :Winners: Linfield 5–1 Derry Celtic
• Shelbourne becomes the second Dublin team to join the Irish Football League, after Bohemians, who joined the previous year.

  Births

• 16 January – Frederick Boland, diplomat, first Irish ambassador to Britain and to the United Nations.
• 26 January – Seán MacBride, Clann na Poblachta TD, Cabinet Minister and Nobel Peace Prize winner.
• 19 February – Maurice O'Sullivan, writer.
• 29 February – James Hamilton, 4th Duke of Abercorn, soldier and politician.
• 7 March – Jim Ganly, cricketer and rugby player.
• 27 April – Cecil Day-Lewis, poet and writer, Poet Laureate of the United Kingdom from 1967 to 1972.
• 7 May – David Sullivan, labour leader in USA.
• 5 June – Derrick Kennedy, cricketer.
• 20 July – Molly Keane, novelist and playwright.
• 17 August – John "Pondoro" Taylor, hunter and writer.
• 9 September – Jack Lawrence, cricketer.
• 2 October – Dermot Boyle, Marshal of the Royal Air Force.
• 21 October – Patrick Kavanagh, poet and novelist.
• 13 December – William McCrea, astronomer and mathematician.
• Full date unknown – Michael McLaverty, novelist.

  Deaths

• 22 January – George Salmon, mathematician and theologian.
• 21 March – William Russell Grace, businessman and first Roman Catholic mayor of New York.
• 5 April – Frances Power Cobbe, social reformer, feminist theorist, pioneer animal rights activist and writer.
• 7 April – Timothy J. Campbell, Democrat U.S. Representative from New York.
• 25 May – Richard Harte Keatinge, recipient of the Victoria Cross for gallantry in 1858 at Chundairee, India.
• 20 October – Richard Phelan, fourth Roman Catholic Bishop of Pittsburgh, Pennsylvania.
• 16 November – James Cooney, lawyer and Democratic politician in Missouri.
• Full date unknown – Edwin Hayes, watercolourist.