| 1975 Waterford Senior Hurling Championship | |
| Champions: | Mount Sion |
| Count: | 24 |
| Runners-Up: | Portlaw |
| Previous Year: | 1974 |
| Previous Tournament: | 1974 Waterford Senior Hurling Championship |
| Next Year: | 1976 |
| Next Tournament: | 1976 Waterford Senior Hurling Championship |
The 1975 Waterford Senior Hurling Championship was the 75th staging of the Waterford Senior Hurling Championship since its establishment by the Waterford County Board in 1897.
Mount Sion were the defending champions.
On 19 October 1975, Mount Sion won the championship after a 6–04 to 2–07 defeat of Portlaw in the final.[1] This was their 24th championship title overall and their second title in succession.