| 1966 Limerick Senior Hurling Championship | |
| Champions: | Patrickswell |
| Count: | 2 |
| Previous Year: | 1965 |
| Previous Tournament: | 1965 Limerick Senior Hurling Championship |
| Next Year: | 1967 |
| Next Tournament: | 1967 Limerick Senior Hurling Championship |
The 1966 Limerick Senior Hurling Championship was the 72nd staging of the Limerick Senior Hurling Championship since its establishment by the Limerick County Board.
Patrickswell were the defending champions.
On 29 October 1966, Patrickswell won the championship after a 5–11 to 3–07 defeat of St. Patrick's in the final.[1] It was their second championship title overall and their second title in succession.