The 2012 All-Ireland Under-21 Hurling Championship was the 48th staging of the All-Ireland championship since its establishment in 1964. The draw for the 2012 fixtures took place in late 2011. The championship began on 6 June 2012 and ended on 15 September 2012. Galway were the defending champions.
Clare won the All-Ireland final after defeating Kilkenny by 2âÂÂ17 to 2âÂÂ11.