Aindrias Micheál Ó Caoimh (4 October 1912 – 30 December 1994) was an Irish judge and barrister who served as a Judge of the European Court of Justice from 1975 to 1985, President of the High Court and a Judge of the High Court from 1966 to 1975 and Attorney General of Ireland from January 1950 to June 1950 and 1957 to 1965.