| 1973 Kilkenny Senior Hurling Championship | |
| Champions: | Fenians |
| Count: | 3 |
| Runners-Up: | James Stephens |
| Previous Year: | 1972 |
| Previous Tournament: | 1972 Kilkenny Senior Hurling Championship |
| Next Year: | 1974 |
| Next Tournament: | 1974 Kilkenny Senior Hurling Championship |
The 1973 Kilkenny Senior Hurling Championship was the 79th staging of the Kilkenny Senior Hurling Championship since its establishment by the Kilkenny County Board.
On 14 October 1973, Fenians were the defending champions.
Fenians won the championship after a 7–08 to 5–10 defeat of James Stephens in the final.[1] It was their third championship title overall and their second title in succession.