The championship began on 29 June 2021 and ended on 18 August 2021.

[1] The number of participating teams also increased, with Down and Kildare joining the Leinster Championship.

[2] The final was played on 18 August 2021 at Semple Stadium in Thurles, between Cork and Galway, in what was their first meeting in a final in 23 years.

[3] It was also a 10th successive win for a Munster team in the All-Ireland final.

[4] Kildare's Liam Dempsey was the championship's top scorer with 0-37.