| 2021 Carlow Senior Hurling Championship | |
| Dates: | 6 August - 19 September 2021 |
| Teams: | 5 |
| Sponsor: | JJ Kavanagh & Sons |
| Champions: | Mount Leinster Rangers |
| Count: | 10 |
| Champions Captain: | Michael Doyle |
| Champions Manager: | Conor Phelan |
| Runners-Up: | St Mullin's |
| Runners-Up Manager: | Niall O'Donnell |
| Previous Year: | 2020 |
| Previous Tournament: | 2020 Carlow Senior Hurling Championship |
| Next Year: | 2022 |
| Next Tournament: | 2022 Carlow Senior Hurling Championship |
The 2021 Carlow Senior Hurling Championship was the 92nd staging of the Carlow Senior Hurling Championship since its establishment by the Carlow County Board in 1927. The championship began on 6 August 2021 and ended on 19 September 2021.[1]
Mount Leinster Rangers entered the championship as the defending champions.[2]
The final was played on 19 September 2021 at Netwatch Cullen Park, between Mount Leinster Rangers and St Mullin's, in what was their first ever meeting in a final in two years. Mount Leinster Rangers won the match by 0–24 to 0–16 to claim their 10th championship title overall and a second title in succession.[3]