14 May – Northern Ireland ground to a halt as the Ulster Workers' Council called a strike following the defeat of an anti-Sunningdale Agreement motion.
Late May – President Erskine Childers paid the first state visit by an Irish head of state to Europe when he visited Belgium with his wife, Rita.[1] This followed the three-day state visit to Ireland by King Baudouin and Queen Fabiola of Belgium in May 1968.
14 June – Anatoli Kaplin, the first Soviet Ambassador to Ireland, visited President Childers at Áras an Uachtaráin, the President's residence.[2]
20 July – About ten women, styled as the "Dublin City Women's Invasion Force", including journalist Nell McCafferty, politician and activist Nuala Fennell, and poet Mary D'Arcy, entered the Forty Foot bathing place in Sandycove in Dublin, historically a men-only nude bathing area. The women were claiming their right to swim there. From that time forward, women swam at the Forty Foot.[3]
1 September – Transition Year was introduced on a pilot basis in three schools.
17 November – President Erskine Childers died suddenly, aged 69, having served less than 17 months of his seven-year term.
10 December – Seán MacBride was presented with the Nobel Prize for Peace in Oslo "for his efforts to secure and develop human rights throughout the world". The prize was shared with Eisaku Satō, the former prime minister of Japan.[4]
^Quinn, Ruarí (20 December 2017). "Czarist crown jewels, a red scare and UN veto: Ireland and the USSR". The Irish Times. (Picture caption): Anatoli Kaplin, right, the first ambassador of the USSR, inspects a guard of honour at Áras an Uachtaráin in 1974. (Article text): Diplomatic Relations between Ireland and the Soviet Union were agreed in the early 1970s with embassies being opened, first in Dublin and then in Moscow. Garret FitzGerald was at the ceremonies in Russia and strengthened relations with the Soviet Union now that Ireland was a member of the EEC. Edward Brennan was Ireland's first ambassador in Moscow.