Jim O'Callaghanis an Irish Fianna Fáil politician who has served as Minister for Justice, Home Affairs and Migration since January 2025. He has been a Teachta Dála (TD) for the Dublin Bay South constituency since the 2016 general election.
O'Callaghan has a BCL degree from University College Dublin, a master's degree in law and an M.Phil. in criminology from Sidney Sussex College, Cambridge, and a barrister-at-law degree from the King's Inns. O'Callaghan devilled for Rory Brady.
In 2000, he represented Taoiseach Bertie Ahern in defamation proceedings against a businessman, appearing with Rory Brady and Paul Gallagher, both of whom later served as Attorney General of Ireland. He was made a senior counsel in 2008. O'Callaghan also served as a legal adviser to Fianna Fáil from January 2011 to his election to the Dáil. In 2014, he co-edited a book titled, Law and Government: A Tribute to Rory Brady.