The 1920 All-Ireland Senior Hurling Championship was the 34th staging of the All-Ireland hurling championship since its establishment by the Gaelic Athletic Association in 1887. The championship began on 9 May 1920 and ended on 14 May 1922. Cork were the defending champions, however, they were defeated by Dublin by 4-9 to 4-3 in the final. The final stages of the championship were delayed due to the ongoing War of Independence.