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.
On 4 October 1942, St. Finbarr's won the championship following a 5-07 to 2-02 defeat of Ballincollig in the final. This was their 11th championship title overall and their first in nine championship seasons.[1]