1968 All Ireland Under 21 Hurling Championship

The 1968 All-Ireland Under-21 Hurling Championship was the fifth staging of the All-Ireland hurling championship for players under the age of twenty-one since its establishment by the Gaelic Athletic Association in 1964..

Tipperary were the defending champions, however, they were defeated in the provincial stage. Cork won the title after defeating Kilkenny by 2-18 to 3-9 in the final.