Joe McKelvey (17 June 1898 – 8 December 1922) was an Irish Republican Army officer who was executed during the Irish Civil War. He participated in the anti-Treaty IRA's repudiation of the authority of the Dáil (civil government of the Irish Republic declared in 1919) in March 1922 and was elected to the IRA Army Executive. In April 1922 he helped command the occupation of the Four Courts in defiance of the new Irish Free State. This action helped to spark the civil war, between pro- and anti-Treaty factions. McKelvey was among the most hardline of the anti-Treaty republicans and briefly, in June 1922, became IRA Chief of Staff.