The United Nations flag will fly over Leinster House to mark Ireland's successful election to the United Nations Security Council.
The flag will fly for the duration of Ireland’s term on the UN Security Council.
The decision was made after Fine Gael TD Neale Richmond made the request to fly the flag to Ceann Comhairle Seán Ó Fearghaíl following last month's election.
Ireland competed against Canada and Norway for two seats on the council after ballots were cast and counted at the UN General Assembly in New York.
A total of 191 countries voted. Ireland needed a two-thirds majority, or 128 votes, to win and has obtained the number required.
Mr Richmond said: "I am delighted that the Ceann Comhairle has agreed to my suggestion for the UN flag to be flown at Leinster House.
"This is an important move to mark Ireland's successful election to the UN Security Council, a major achievement for our small state and for our wonderful diplomatic corps."
