Cearbhall Ó Dálaigh (12 February 1911 – 21 March 1978; Irish pronunciation: ['ca??w?l? o? 'd??a?l??]) was an Irish Fianna Fáil politician, judge and barrister who served as the fifth President of Ireland from December 1974 to October 1976.
He served as a Judge of the European Court of Justice from 1973 to 1974, Chief Justice of Ireland from 1961 to 1973, a Judge of the Supreme Court from 1953 to 1973 and Attorney General of Ireland from 1946 to 1948 and 1951 to 1953.
His name is sometimes given in the alternative spelling of Carroll O'Daly, which he also used during his legal career.