Martin John O'Neill, Baron O'Neill of Clackmannan (6 January 1945 – 26 August 2020) was a Scottish Labour politician. He was a Member of Parliament from 1979 until 2005 and as a member of the House of Lords from 2005 until his death in 2020. He was in the Neil Kinnock Shadow Government between 1988 to 1992. O'Neill was born in Edinburgh.