Mr Justice David Barniville of the High Court has been appointed a judge of the Court of Appeal.
The Government made the decision at its meeting of 22 June.
Mr Justice Barniville was appointed to the High Court in 2017. He joined the bar in 1990 and the Inner Bar in 2006.
His nomination follows the recent appointment of Mr Justice Maurice Collins of the Court of Appeal as a part-time Commissioner of the Law Reform Commission for a five-year term.
This appointment creates an additional post for an ordinary judge on the Court of Appeal.
President Michael D Higgins will make the appointment in due course.