Two referendums were held together in Ireland on 5 July 1979, each on a proposed amendment of the Irish constitution. Both proposals were approved by voters.
The Sixth Amendment to the constitution provided that orders made by the Adoption Board could not be declared unconstitutional because they were not made by a court.
| Choice | Votes | % |
|---|---|---|
 Yes | 601,694 | 98.97 |
| No | 6,265 | 1.03 |
| Valid votes | 607,959 | 97.51 |
| Invalid or blank votes | 15,517 | 2.49 |
| Total votes | 623,476 | 100.00 |
| Registered voters and turnout | 2,179,466 | 28.61 |
The Seventh Amendment to the constitution allowed the state to determine by law which institutions of higher education would be entitled to elect members of the Senate.
| Choice | Votes | % |
|---|---|---|
| Yes | 552,600 | 92.40 |
| No | 45,484 | 7.60 |
| Valid votes | 598,084 | 96.06 |
| Invalid or blank votes | 24,562 | 3.94 |
| Total votes | 622,646 | 100.00 |
| Registered voters and turnout | 2,179,466 | 28.57 |
The Third Amendment of the Constitution Act 1972 is an amendment to the Constitution of Ireland that permitted the State to join the European Communities, which would later become the European Union, and provided that European Community law would take precedence over the constitution. It was approved by referendum on 10 May 1972, and signed into law by the President of Ireland Éamon de Valera on 8 June of the same year.
The Fourth Amendment of the Constitution Act 1972 is an amendment to the Constitution of Ireland which lowered the voting age for all national elections and referendums in the state from twenty-one to eighteen years of age. It was approved by referendum on 7 December 1972 and signed into law on 5 January 1973.
The Fifth Amendment of the Constitution Act 1972 is an amendment to the Constitution of Ireland which deleted two subsections that recognised the special position of the Catholic Church and that recognised other named religious denominations. It was approved by referendum on 7 December 1972 and signed into law on 5 January 1973.
The Sixth Amendment of the Constitution (Adoption) Act 1979 is an amendment to the Constitution of Ireland ensured that certain adoption orders would not be found to be unconstitutional because they had not been made by a court. It was approved by referendum on 5 July 1979 and signed into law on 3 August 1979.
The Seventh Amendment of the Constitution Act 1979 is an amendment to the Constitution of Ireland that provides that the procedure for the election of six members of the Senate in the university constituencies could be altered by law. It was approved by referendum on 5 July 1979 and signed into law on 3 August of the same year.
The Ninth Amendment of the Constitution Act 1984 is an amendment to the Constitution of Ireland that allowed for the extension of the right to vote in elections to Dáil Éireann to non-Irish citizens. It was approved by referendum on 14 June 1984, the same day as the European Parliament election, and signed into law on 2 August of the same year.
The Tenth Amendment of the Constitution Act 1987 is an amendment to the Constitution of Ireland that permitted the state to ratify the Single European Act. It was approved by referendum on 26 May 1987 and signed into law on 22 June of the same year.
The Eleventh Amendment of the Constitution Act 1992 is an amendment to the Constitution of Ireland permitted the state to ratify the Treaty on European Union, commonly known as the Maastricht Treaty. It was approved by referendum on 18 June 1992 and signed into law on 16 July of the same year.
The Seventeenth Amendment of the Constitution Act 1997 amended the Constitution of Ireland to provide that the confidentiality of meetings of the cabinet would not prevent the High Court from ordering that certain information be disclosed when this was in the public interest. It was approved by referendum on 30 October 1997 and signed into law on 14 November of the same year.
The Twenty-sixth Amendment of the Constitution Act 2002 is an amendment of the Constitution of Ireland which permitted the state to ratify the Treaty of Nice. It was approved by referendum on 19 October 2002 and signed into law on 7 November of the same year. The amendment followed a previous failed attempt to approve the Nice Treaty which was rejected in the first Nice referendum held in 2001.
Amendments to the Constitution of Ireland are only possible by way of referendum. A proposal to amend the Constitution of Ireland must first be approved by both Houses of the Oireachtas (parliament), then submitted to a referendum, and finally signed into law by the President of Ireland. Since the constitution entered into force on 29 December 1937, there have been 32 amendments to the constitution.
The Nineteenth Amendment of the Constitution is an amendment of the Constitution of Ireland which permitted the state to be bound by the British–Irish Agreement and enabled the establishment of shared political institutions between Ireland and Northern Ireland. It also provided a mechanism for a further amendment to the Constitution upon a declaration by the government on the implementation of the Agreement, most notably by changing Articles 2 and 3 from an irredentist claim on the whole island of Ireland to an aspiration towards creating a united Ireland by peaceful means, "with the consent of a majority of the people, democratically expressed, in both jurisdictions in the island".
The Fourteenth Amendment of the Constitution Act 1992 is an amendment to the Constitution of Ireland which specified that the protection of the right to life of the unborn does not limit the right to distribute information about services in foreign countries. It was approved by referendum on 25 November 1992 and signed into law on 23 December of the same year.
The Thirteenth Amendment of the Constitution Act 1992 is an amendment to the Constitution of Ireland which specified that the protection of the right to life of the unborn does not limit freedom of travel in and out of the state. It was approved by referendum on 25 November 1992 and signed into law on 23 December of the same year.
Two referendums were held together in the Republic of Ireland on 22 May 1998, each on a proposed amendment of the Irish constitution. Both measures were approved. A referendum in Northern Ireland was also held on the same day.
Two referendums were held together in Ireland on 7 December 1972, each on a proposed amendment of the Irish constitution. Both proposals were approved by voters.
The Twelfth Amendment of the Constitution Bill 1992 was a failed proposal to amend the Constitution of Ireland, to exclude the risk of suicide as sufficient reason to legally allow an abortion. It was rejected in a referendum on 25 November 1992.
Three referendums were held simultaneously in Ireland on 7 June 2001, each on a proposed amendment of the Constitution of Ireland. Two of the measures were approved, while the third was rejected. The two successful amendments concerned the death penalty and the International Criminal Court.
Two constitutional referendums were held simultaneously in Ireland on 27 October 2011, each on a proposed amendment of the Constitution of Ireland. The proposed amendments are on judicial salaries pay cuts, and to provide additional powers to Oireachtas committees.
The Thirty-first Amendment of the Constitution (Children) Act 2012 amended the Constitution of Ireland by inserting clauses relating to children's rights and the right and duty of the state to take child protection measures. It was passed by both Houses of the Oireachtas (parliament) on 10 October 2012, and approved at a referendum on 10 November 2012, by 58% of voters on a turnout of 33.5%. Its enactment was delayed by a High Court case challenging the conduct of the referendum. The High Court's rejection of the challenge was confirmed by the Supreme Court on 24 April 2015. It was signed into law by the President on 28 April 2015.
