1974 All Ireland Under 21 Hurling Championship

The 1974 All-Ireland Under-21 Hurling Championship was the 11th staging of the All-Ireland Under-21 Hurling Championship since its establishment by the Gaelic Athletic Association in 1964.

Cork were the defending champions, however, they were defeated by Clare in the Munster semi-final.

On 8 September 1974, Kilkenny won the championship following a 3-8 to 3-7 defeat of Waterford in the All-Ireland final. This was their first All-Ireland title in the under-21 grade.