The 2007 Irish general election took place on Thursday, 24 May after the dissolution of the 29th Dáil by the President on 30 April, at the request of the Taoiseach. The general election took place in 43 parliamentary constituencies throughout Ireland for 166 seats in Dáil Éireann, the lower house of parliament, with a revision of constituencies since the last election under the Electoral (Amendment) Act 2005. The outgoing Fianna Fáil–Progressive Democrat administration was returned, joined by the Green Party and supported by some independents, giving a government majority of 9.

While Fine Gael gained 20 seats, Fianna Fáil remained the largest party. The election was considered a success for Fianna Fáil; however, Fianna Fáil's junior coalition partners in the 29th Dáil, the Progressive Democrats, lost six of their eight seats.

The 30th Dáil met on 14 June to nominate a Taoiseach and ratify the ministers of the new 27th government of Ireland. It was a coalition government of Fianna Fáil, the Green Party and the Progressive Democrats initially supported by four Independent TDs. It was the first time the Green Party entered government.

On 30 April 2007, President Mary McAleese dissolved the 29th Dáil on the request of the Taoiseach, Bertie Ahern. The election date was officially set as 24 May 2007; the 30th Dáil would convene on 14 June 2007 at which stage the Taoiseach would be nominated and the rest of the Government approved for appointment by the President. Official campaigning began as soon as the announcement had been made.

Current statute requires that the Dáil be dissolved within five years after its first meeting (6 June 2002) following the previous election and the election must take place not later than thirty days after the dissolution. The Taoiseach allowed the 29th Dáil to near the completion of its five-year term before seeking a dissolution. After the 2002 general election he commented that his prior confirmation of this policy had caused problems in the last year of his government. There was speculation in 2005 that he might have moved to dissolve parliament early to catch the opposition off guard, although this did not transpire.

In 2005, in anticipation of the election date, the parties began candidate selections and from mid-2005 some members of the 29th Dáil announced their retirement plans.

A statement by Minister of State for Children Brian Lenihan in November 2006 suggested that the election would take place in May 2007, which would be the case. In December 2006, Bertie Ahern stated unambiguously that the election would take place in summer 2007.

There was some controversy over which day of the week the election should have been held on, as some opposition parties insisted that a weekend polling day would have made it easier for those studying or working away from home to vote. Ireland's voter registration process presents difficulties for people who live at a second address for part of the week. Previous elections and referendums have been held on Thursdays, Fridays and (in one case) a Wednesday. For the 2007 election, polling day was a Thursday.