| 1891 Limerick Senior Hurling Championship | |
| Champions: | Treaty Stones |
| Count: | 1 |
| Runners-Up: | South Liberties |
| Previous Year: | 1890 |
| Previous Tournament: | 1890 Limerick Senior Hurling Championship |
| Next Year: | 1893 |
| Next Tournament: | 1893 Limerick Senior Hurling Championship |
The 1891 Limerick Senior Hurling Championship was the fifth staging of the Limerick Senior Hurling Championship since its establishment by the Limerick County Board in 1887.
South Liberties were the defending champions.
Treaty Stones won the championship after a 2–01 to 0–01 defeat of South Liberties in the final.[1] It was their first championship title.