The following lists events that happened during 2000 in Ireland.
President: Mary McAleese
Taoiseach: Bertie Ahern (FF)
Tánaiste: Mary Harney (PD)
Chief Justice: Liam Hamilton (until ?); Ronan Keane (starting ?)
Dáil: 28th
3 February – John Gilligan's extradition from the UK to Ireland on drug trafficking and murder charges was completed.
11 February – The British government suspended devolution in Northern Ireland.
10 April – The ambulance service regulator, the Pre-Hospital Emergency Care Council, was established.
Spring – Clive Cussler's National Underwater and Marine Agency discovered the wreck of RMS Carpathia (sunk 1918) 120 mi (190 km) west of Fastnet Rock.
6 May – The Provisional Irish Republican Army began decommissioning its weapons.
30 May – Devolution returned to Northern Ireland.
6 July – The Intoxicating Liquor Act, 2000 came into effect abolishing the so-called "holy hour" between 2 pm and 4 pm on Sundays when pubs had been forced to close their doors.
12 December – President Bill Clinton of the United States arrived in Dublin beginning his last international trip as President and met with President Mary McAleese and Taoiseach Bertie Ahern and gave a speech in Dundalk.
13 December – Bill Clinton met with the political leaders of Northern Ireland.
31 December – Ireland celebrated as the 20th century drew to a close.
Arts and literature
7 February – The Chester Beatty Library opened in its new premises in the grounds of Dublin Castle.
31 October – Boyband Westlife scored their seventh straight UK number one, becoming the only artists in UK chart history to achieve this.
December – The quarterly cultural magazine The Dublin Review was launched by Brendan Barrington.
John Banville's novel Eclipse was published.
Anne Enright's novel What Are You Like? was published.
Shelbourne won the double of the League of Ireland Premier Division and the FAI Cup for the first time in their history. They then knocked out Macedonian side Sloga Jugomagnat in the first round of the UEFA Champions League qualifiers. Their 1–0 win in Skopje was the first away win in a European tie by a League of Ireland side for eighteen years. Rosenborg of Norway knock Shelbourne out 4–2 on aggregate in the second qualifying round.
Kilkenny won the All-Ireland Senior Hurling Championship.
Kerry won the All-Ireland Senior Football Championship.
Murphy's Irish Open was won by Patrik Sjöland (Sweden).
January to June
28 January – Tony Doyle, actor (born 1942).
1 February – Patrick Shanahan, Fianna Fáil TD (born 1908).
2 February – Francis Stuart, writer (born 1902).
25 February – Tom McEllistrim, Fianna Fáil TD (born 1926).
6 March – Jonathan Philbin Bowman, journalist and radio presenter (born 1969).
20 April – John Carthy, shot dead in controversial circumstances by An Garda Síochána after a twenty-five-hour siege at his home (born 1972).
7 June – Mona Tyndall, missionary sister and development worker (born 1921).
10 June – Frank Patterson, tenor (born 1938).
July to December
10 July – Denis O'Conor Don, hereditary chief of the O'Conor Don sept (born 1912).
14 August – John Boland, senior Fine Gael politician (born 1944).
18 October – James Gill, cricketer (born 1911).
8 November – Brian Boydell, composer, professor of music at Trinity College, Dublin (born 1917).
18 November – Lochlainn O'Raifeartaigh, physicist responsible for the O'Raifeartaigh Theorem and the O'Raifeartaigh Model of supersymmetry breaking (born 1933).
26 November – Paddy Donegan, former Fine Gael TD and Cabinet Minister (born 1923).
Full date unknown
Paddy Barry, Cork hurler (born 1928).
Paddy Flanagan, cyclist (born 1941).
Alf Ringstead, soccer player (born 1927).
