| 1920 Limerick Senior Hurling Championship | |
| Champions: | Young Irelands |
| Count: | 3 |
| Runners-Up: | Newcastle West |
| Previous Year: | 1919 |
| Previous Tournament: | 1919 Limerick Senior Hurling Championship |
| Next Year: | 1921 |
| Next Tournament: | 1921 Limerick Senior Hurling Championship |
The 1920 Limerick Senior Hurling Championship was the 28th staging of the Limerick Senior Hurling Championship since its establishment by the Limerick County Board in 1887.
Croom were the defending champions.
Young Irelands won the championship after a 5–04 to 0–01 defeat of Newcastle West in the final.[1] It was their third championship title overall and their first title since 1910.