| 1942 Cork Senior Hurling Championship | |
| Dates: | 19 April – 4 October 1942 |
| Teams: | 11 |
| Champions: | St. Finbarr's |
| Count: | 11 |
| Runners-Up: | Ballincollig |
| Runners-Up Captain: | Willie Murphy |
| Matches: | 10 |
| Goals: | 76 |
| Points: | 96 |
| Previous Year: | 1941 |
| Previous Tournament: | 1941 Cork Senior Hurling Championship |
| Next Year: | 1943 |
| Next Tournament: | 1943 Cork Senior Hurling Championship |
The 1942 Cork Senior Hurling Championship was the 54th staging of the Cork Senior Hurling Championship since its establishment by the Cork County Board in 1887. The draw for the opening round fixtures took place at the Cork Convention on 25 January 1942. The championship began on 19 April 1942 and ended on 4 October 1942.
Glen Rovers entered the championship as the defending champions and were in search of a ninth successive title, however, they were beaten by Ballincollig in the semi-final.[1] [2]
The final was played on 4 October 1942 at the Athletic Grounds in Cork, between St. Finbarr's and Ballincollig, in what was their first ever meeting in the final.[3] St. Finbarr's won the match by 5–07 to 2–02 to claim their 11th championship title overall and a first title in nine years.[4] [5]
Promoted from the Cork Intermediate Hurling Championship
Regraded to the Cork Intermediate Hurling Championship
Declined to field a team