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Events in the year 1903 in Ireland.
Events
- 3 January – The Norwegian ship Remittant was towed into quarantine in Queenstown with the entire crew suffering from beriberi.
- 3 February – The proposed canonisation of Oliver Plunkett was discussed in Rome.
- 26–27 February – "Ulysses" Storm: A windstorm passed across Ireland, uprooting 1–3,000 trees in Phoenix Park.
- 26 February – The ocean liner SS Columbus was launched by Harland and Wolff in Belfast.
- 27 February – A meeting at the Mansion House, Dublin, enthusiastically welcomed a movement to establish Saint Patrick's Day as a national holiday.
- 8 March – Charles Gavan Duffy was buried at Glasnevin Cemetery in Dublin. He was laid to rest near others who took part in the Young Irelander Rebellion of 1848.
- 9 March – The Londonderry and Lough Swilly Railway's Letterkenny and Burtonport Extension was opened.
- 17 March – In Waterford, Saint Patrick's Day was marked as a public holiday (to encourage temperance).
- 26 March – The Chief Secretary for Ireland, George Wyndham, introduced his Irish Land Bill in the House of Commons of the United Kingdom.
- 31 March – The Lord-Lieutenant announced that Edward VII and Queen Alexandra intended to visit Ireland within the coming year.
- 15 May – The Chief Secretary for Ireland, George Wyndham, asked for support for his Irish Land Bill.
- 23 May – Extracts from the annual report of the British Army showed that there were 35,717 Irishmen in its service.
- 9 June – Trinity College Dublin announced following a vote that it was to award degrees to women. The first women would be admitted in 1904.
- 1 July – The Belfast and Northern Counties Railway became the Northern Counties Committee of the Midland Railway of England.
- 19–27 July – Edward VII made his first visit to Ireland as monarch,
- The Pigeon House generating station in Dublin started producing electricity.
- The withdrawal of the last British Royal Navy guard ship to be permanently stationed at Kingstown, the cruiser , took place.
- The Cork International Exhibition was re-opened.
Arts and literature
- January – An Túr Gloine, the cooperative studio for stained glass, was established by Sarah Purser in Dublin.
- 8 October – J. M. Synge's play, In the Shadow of the Glen, was first performed at the Molesworth Hall, Dublin.
- 7 December – The first Irish language opera, Muirgheis, with music by Thomas O'Brien Butler and libretto by Thadgh O'Donoghue was first performed at the Theatre Royal, Dublin.
- Padraic Colum's Broken Soil was performed by W. G. Fay's Irish National Dramatic Company.
- George Moore's short stories The Untilled Field were published.
- 'Æ' (George William Russell)'s The Nuts of Knowledge, lyrical poems old and new was published by Elizabeth Yeats's Dun Emer Press at Dundrum, Dublin.
- W. B. Yeats's poetry collection In the Seven Woods, being poems of the Irish heroic age was published by his sister's Dun Emer Press;
- County Cork-born Chicago chief of police Francis O'Neill's collection O'Neill's Music of Ireland was published.
Sport
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Association football
- ; International
- : 14 February – England 4–0 Ireland (in Wolverhampton)
- : 21 March – Scotland 0–2 Ireland (in Glasgow)
