Jim O'Callaghan is a Fianna Fáil politician who has been a Teachta Dála (TD) for the Dublin Bay South constituency since the 2016 general election. He has a BCL degree from University College Dublin, a master's degree in law and an M.Phil. in criminology from Sidney Sussex College, at Cambridge University, and a barrister-at-law degree from the King's Inns. In addition, he played rugby at a senior level, representing UCD, Cambridge University, London Irish, Wanderers, Leinster and Connacht. He was also capped for Ireland at under-21 level.