|The Hon. Mr. Justice
|Justice of the Supreme Court|
10 March 2010
|Nominated by||Government of Ireland|
|Appointed by||Mary McAleese|
|Born||Donal John O'Donnell
10 April 1958
Belfast, Northern Ireland
|Spouse(s)||Mary Rose Binchy|
|Education||St. Mary's Christian Brothers' Grammar School, Belfast|
He was called to the Irish Bar in 1982, was called to the Bar of Northern Ireland in 1989. He has practised in all Courts in Ireland, in the European Court of Justice (ECJ) and the European Court of Human Rights (ECHR). He comes from a legal family: his father, The Rt. Hon Sir Turlough O'Donnell PC, was a member of the High Court of Northern Ireland and of the Court of Appeal of Northern Ireland between 1971 and 1990. His brother Turlough O'Donnell S.C. is former Chairman of the Bar Council of Ireland.
O'Donnell has been a member of the Law Reform Commission since 2005. He is a member of the Royal Irish Academy Committee on the Origins of the Constitution. He became a Bencher of the King's Inns in 2009 and was appointed to the Supreme Court in 2010. Like Adrian Hardiman, he received the rare honour of being appointed directly from the Bar to Ireland's highest court.
- "Mr Justice Donal O'Donnell formally appointed to Supreme Court". The Irish Times. 1 January 2010. Retrieved 4 June 2011.
- "NI barrister joins Supreme Court". The Belfast Telegraph. 20 January 2010. Retrieved 4 June 2011.
- "O'Donnell takes Supreme Court seat". Irish Times. 20 January 2010. Retrieved 20 January 2016.
- "Constitutional barrister appointed to Supreme Court". Breakingnews.ie. 20 January 2010. Retrieved 20 January 2016.