A referendum on a proposal to amend the Irish Constitution to allow Ireland to ratify the Treaty of Nice was held on 7 June 2001.

The Treaty of Nice was agreed by the Heads of State or Government of the EU Member States on 11 December 2000. The main purpose of the Treaty of Nice was to make some changes in the institutions which governed the EU. It also dealt with issues such as common foreign and security policy.

The referendum sought to amend Article 29 of the Irish Constitution. This Article dealt with international relations and included provisions already inserted following the referendums held to ratify membership of the European Communities (1972), the Single European Act (1987), the Treaty on European Union (the Maastricht Treaty) (1992) and the Treaty of Amsterdam (1998).

The proposal was rejected by the people.


Below is a link to the Referendum Commission report on the Treaty of Nice Referendum.