| 2003 Offaly Senior Hurling Championship | |
| Dates: | 3 May – 5 October 2003 |
| Teams: | 13 |
| Champions: | Birr |
| Count: | 18 |
| Champions Captain: | Niall Claffey |
| Champions Manager: | Pad Joe Whelehan |
| Runners-Up: | Ballyskenagh |
| Runners-Up Captain: | David Franks |
| Runners-Up Manager: | Paddy Kirwan |
| Previous Year: | 2002 |
| Previous Tournament: | 2002 Offaly Senior Hurling Championship |
| Next Year: | 2004 |
| Next Tournament: | 2004 Offaly Senior Hurling Championship |
The 2003 Offaly Senior Hurling Championship was the 106th staging of the Offaly Senior Hurling Championship since its establishment by the Offaly County Board in 1896. The draw for the group stage placings too place on 4 February 2003. The championship ran from 3 May to 5 October 2003.
Birr were the defending champions.[1] [2]
The final was played on 5 October 2003 at St Brendan's Park in Birr, between Birr and Ballyskenagh, in what was their first ever meeting in the final.[3] Birr won the match by 1–18 to 1–11 to claim their 18th championship title overall and a fourth title in succession.[4] [5]