2021 Cork Senior A Hurling Championship

The 2021 Cork Senior A Hurling Championship was the second staging of the Cork Senior A Hurling Championship since its establishment by the Cork County Board in 2020. The draw for the group stage placings took place on 29 April 2021. The championship began on 11 September 2021 and ended on 21 November 2021.

The final was played on 21 November 2021 at Páirc Uí Chaoimh in Cork, between Kanturk and Fr. O'Neill's, in what was their first meeting in a final. Kanturk won the match by 3–17 to 2–13 to claim their first championship title.

Blarney's Mark Coleman was the championship's top scorer with 1-38.

To Championship
Relegated from the Cork Premier Senior Hurling Championship
 * Ballyhea

Promoted from the Cork Premier Intermediate Hurling Championship
 * Blarney

From Championship
Promoted to the Cork Premier Senior Hurling Championship
 * Charleville

Relegated to the Cork Premier Intermediate Hurling Championship
 * Kilworth

Participating teams
The seedings were based on final group stage positions from the 2020 championship.

Top scorers

 * Overall


 * In a single game