Dr. Bernard MacMahon (1680âÂÂ27 May 1747) was Bishop of Clogher 1727âÂÂ1737 and Archbishop of Armagh 1738âÂÂ1747.
MacMahon was appointed as Roman Catholic Bishop of Clogher on 17 August 1727, following the death of his predecessor, Hugh MacMahon. Bernard MacMahon was transferred to the position of Archbishop of Armagh on 8 November 1737. In 1741, he would go into hiding as a result of him not promoting a priest to a parish; this would result in a warrant being issued for his arrest. He died in Armagh on 27 May 1747.