Conor Alexander Maguire (16 December 1889 – 26 September 1971) was an Irish politician, lawyer and judge who served as Chief Justice of Ireland from 1946 to 1961, a Judge of the Supreme Court from 1946 to 1961, President of the High Court, a Judge of the High Court from 1936 to 1946 and Attorney General of Ireland from March 1932 to November 1932. He served as a Teachta Dála (TD) for the National University of Ireland constituency from 1932 to 1936.