2021 Kilkenny Senior Hurling Championship
| Dates | 2 October - 7 November 2021 | ||
|---|---|---|---|
| Teams | 12 | ||
| Sponsor | St. Canice's Credit Union | ||
| Champions | Ballyhale Shamrocks (19th title) Colin Fennelly (captain) James O'Connor (manager) | ||
| Runners-up | O'Loughlin Gaels Andy Comerford (manager) | ||
| Relegated | Rower-Inistioge | ||
| Tournament statistics | |||
| Matches played | 14 | ||
| Goals scored | 44 (3.14 per match) | ||
| Points scored | 509 (36.36 per match) | ||
| Top scorer(s) | T. J. Reid (1-31) | ||
| |||
The 2021 Kilkenny Senior Hurling Championship was the 127th staging of the Kilkenny Senior Hurling Championship since its establishment by the Kilkenny County Board in 1887. The championship began on 2 October 2021 and ended on 7 November 2021.
Ballyhale Shamrocks entered the championship as the defending champions. Rower-Inistioge were relegated from the championship after being beaten in a playoff by Erin's Own.
The final was played on 7 November 2021 at UPMC Nowlan Park in Kilkenny, between Ballyhale Shamrocks and O'Loughlin Gaels, in what was their first meeting in a final in five years. Ballyhale Shamrocks won the match by 3–19 to 3–15 to claim their 19th championship title overall and a fourth title in succession.
T. J. Reid was the championship's top scorer with 1-31.