Ruairí Ó Brádaigh (2 October 1932 – 5 June 2013) was an Irish republican paramilitary and political leader. He was Chief of Staff of the Irish Republican Army (IRA) from 1958–1959 and again from 1960–1962, president of Sinn Féin from 1970 to 1983, and president of Republican Sinn Féin from 1987 to 2009.