The 2017 All-Ireland Under-21 Hurling Championship was the 54th staging of the All-Ireland Under-21 Hurling Championship since its establishment by the Gaelic Athletic Association in 1964.

Waterford entered the championship as the defending champions, however, they were defeated by Cork in the Munster semi-final.

[1][2] Meath fielded a team in the championship for the first time in several seasons.

On 9 September 2017, Limerick won the championship following a 0-17 to 0-11 defeat of Kilkenny in the All-Ireland final.

[4] Preliminary round Quarter-finals Semi-finals Final Quarter-final Semi-finals Final Semi-finals Final Top scorers overall Top scorers in a single game