Monarch - George VI
27 February - Aircraft carrier HMCS Bonaventure (CVL 22) is launched at the Harland and Wolff shipyard in Belfast to British Admiralty order as HMS Powerful.
8 May - V-E Day is celebrated throughout the UK.
14 May - Formal surrender of German U-boats at Londonderry Port (HMS Ferret, Lisahally).
16 May - Éamon de Valera replies in a radio broadcast to Winston Churchill's criticism of Irish neutrality.
26 July - United Kingdom general election, 1945.
15 August- V-J Day is celebrated in the UK.
21 August - Two Nationalist Members of Parliament, Eddie McAteer and Malachy Conlon, take the Oath of Allegiance and enter the Parliament of the United Kingdom at Westminster.
15 October - Professor Eoin MacNeill dies in Dublin aged 77. He was a founder-member of the Gaelic League and the Irish Volunteers.
14 November - A convention meeting in Dungannon establishes the nationalist Irish Anti-Partition League.
John Luke paints The Old Callan Bridge and The Three Dancers.
F. L. Green's novel Odd Man Out is published.
29 January - Jim Nicholson, Unionist politician and MEP for Northern Ireland.
12 June - Pat Jennings, former international soccer player.
4 July - David McWilliams, singer, songwriter, and guitarist (died 2002).
16 August - Allan Bresland, DUP Northern Ireland Assembly member for West Tyrone.
25 August - Sammy Duddy, member of the Ulster Political Research Group (died 2007).
31 August - Van Morrison, singer and songwriter.
15 September - Dave Clements, former soccer player and manager.
21 September - Shaw Clifton, General of The Salvation Army.
17 October - Jimmy Cricket (James Mulgrew), comedian.
31 October - Bobbie Hanvey, photographer and radio personality.
17 November - Damien Magee, racing driver.
5 December - Evin Crowley, actress.
Brendan Hamill, poet and writer.
Martin Meehan, Sinn Féin politician and former volunteer in the Provisional Irish Republican Army (died 2007).
Graham Reid, playwright.
James A. Sharkey, historian and Irish diplomat.
13 October - Joseph MacRory, Cardinal, Archbishop of Armagh and Primate of All Ireland (born 1861).
15 October - Eoin MacNeill, scholar, nationalist and revolutionary (born 1867).
20 December - John M. Lyle, architect in Canada (born 1872).
1945 in Northern Ireland Wikipedia