January 1st: a new system for vehicle registration plates came into force in the Republic, with letter codes assigned to each county.
January 20th: Labour Party ministers resigned from the government led by Fine Gael's Dr Garret FitzGerald over a disagreement on budget proposals.
February 17th: A general election took place.
March 10th: A Fianna Fáil minority government was formed with Charles Haughey as taoiseach.
March 6th: the British ferry MS Herald of Free Enterprise capsized while leaving the harbour of Zeebrugge, Belgium, killing 193 people.
March 11th: Dr FitzGerald resigned the leadership of Fine Gael. He was later succeeded by Alan Dukes.
March 22nd: The first Irish National Lottery was launched in Dublin.
March 23rd: 31 people were injured when an IRA bomb exploded at the officers' club of a joint British RAF and army barracks in Rheindahlen, West Germany.
May 8th: Eight members of the IRA and a civilian were killed in an ambush by the British SAS and the RUC at Loughgall, Co Armagh, as they were launching a bomb attack on a police station.
April 19th: The Simpsons cartoon first appeared as a series of shorts on The Tracey Ullman Show.
May 9th: Johnny Logan made history in Brussels when he won the Eurovision Song Contest for Ireland for the second time with his own composition Hold Me Now.
May 26th: Just 44 per cent of the State's 2.4 million voters went to the polls in a referendum on the Single European Act. Almost 70 per cent of them voted in favour of the 10th Amendment to the Constitution.
June 11th: A general election in Britain saw Margaret Thatcher returned for a third term as prime minister.
June 24th: Lionel Messi, who would later become what many consider to be the best footballer in the world, was born.
July 26th: Stephen Roche became the first Irishman to win the Tour de France, prompting Charles Haughey to jet to Paris to share in the glory on the Champs-Élysées.
October 19th: A day of extreme turmoil on worldwide financial markets saw Wall Street take its then biggest plunge in history, becoming known as "Black Monday".
October 23rd: Retired English jockey Lester Piggott was jailed for three years for tax evasion.
November 8th: 11 civilians were killed and 63 injured when a 30lb IRA bomb exploded during a Remembrance Day service in Enniskillen.
November 5th: Irish broadcaster Eamonn Andrews died in London aged 64.
November 29th: Beaumont Hospital, Dublin, opened to patients.
December 15th: The construction of the Channel Tunnel between England and France commenced .
December 29th: Kylie Minogue released her first single, I Should Be So Lucky.