The Prespa agreement, also known as the Prespes agreement, Prespa accord or Treaty of Prespa, is an agreement reached on 12 June 2018 between Greece and North Macedonia, under the United Nations' auspices, resolving a long-standing dispute over the latter's name.
Signed beside Lake Prespa from which it took its name, and ratified by the parliaments of both countries by 25 January 2019, it went into force on 12 February 2019 when the two countries notified the UN of the deal's completion, following the ratification of the NATO accession protocol for North Macedonia on 8 February. It replaces the interim accord of 1995 and sees the country's constitutional name, then Republic of Macedonia, changed to Republic of North Macedonia erga omnes.
The Prespa agreement cannot be superseded by any other agreements or treaties nor revoked, and its provisions are legally binding for both parties in terms of international law and will remain in force indefinitely.