The 2021 All-Ireland Minor Hurling Championship was the 91st staging of the All-Ireland Minor Hurling Championship since its establishment by the Gaelic Athletic Association in 1928.

The number of participating teams also increased, with Down and Meath joining the Leinster Championship.

[2] Galway entered the championship as the defending champions in search of a fifth successive title.

[3] The final, the first to be played at Semple Stadium in Thurles in over 30 years, was played on 21 August 2021 between Cork and Galway, in what was their first meeting in a final in four years.

[4][5] Cork's Jack Leahy was the championship's top scorer with 4-41.