| 2021 Laois Senior Hurling Championship | |
| Dates: | 28 August - 7 November 2021 |
| Teams: | 8 |
| Sponsor: | Laois Shopping Centre |
| Champions: | Clough–Ballacolla |
| Count: | 10 |
| Champions Captain: | Stephen Maher |
| Champions Manager: | Declan Laffan |
| Runners-Up: | Borris-in-Ossory/Kilcotton |
| Runners-Up Captain: | Colm Stapleton |
| Runners-Up Manager: | Ciarán Comerford |
| Relegated: | Abbeyleix St Lazarian's |
| Previous Year: | 2020 |
| Previous Tournament: | 2020 Laois Senior Hurling Championship |
| Next Year: | 2022 |
| Next Tournament: | 2022 Laois Senior Hurling Championship |
The 2021 Laois Senior Hurling Championship was the 128th staging of the Laois Senior Hurling Championship since its establishment by the Laois County Board in 1888. The draw for the group stage placings took place on 8 July 2021.[1] [2] The championship ran from 28 August to 7 November 2021.
Clough–Ballacolla entered the championship as the defending champions.[3]
The final was played on 7 November 2021 at MW Hire O'Moore Park in Port Laoise, between Clough–Ballacolla and Borris-in-Ossory/Kilcotton, in what was their second consecutive meeting in the final. Clough–Ballacolla won the match by 1–25 to 2–21 to claim their 10th championship title overall and a second title in succession.[4]
Promoted from the Laois Premier Intermediate Hurling Championship
Relegated to the Laois Premier Intermediate Hurling Championship