The 2021 Cavan Senior Hurling Championship was the 62nd staging of the Cavan Senior Hurling Championship since its establishment by the Cavan County Board in 1908.

The championship ran from 9 August to 5 November 2021 Mullahoran St Joseph's entered the championship as the defending champions, however, they failed to qualify for the final from the group stage.

[1][2] The final was played on 5 November 2021 at Kingspan Breffni Park in Cavan, between Cootehill Celtic and Pearse Óg, in what was their first ever meeting in the final.

Cootehill Celtic won the match by 2–12 to 2–11 to claim their sixth championship title overall and a first title in five years.

[3][4] Finalists