| 1931 Cork Senior Hurling Championship | |
| Dates: | 22 March 1931 – 13 December 1931 |
| Teams: | 15 |
| Count: | 21 |
| Champions Captain: | Eudie Coughlan |
| Runners-Up: | Éire Óg |
| Runners-Up Captain: | Dinny Barry-Murphy |
| Matches: | 14 |
| Goals: | 77 |
| Points: | 91 |
| Previous Year: | 1930 |
| Previous Tournament: | 1930 Cork Senior Hurling Championship |
| Next Year: | 1932 |
| Next Tournament: | 1932 Cork Senior Hurling Championship |
The 1931 Cork Senior Hurling Championship was the 43rd 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 1931. The championship began on 22 March 1931 and ended on 13 December 1931.
Blackrock were the defending champions.
On 13 December 1931, Blackrock won the championship following a 2–4 to 0–3 defeat of Éire Óg in the final.[1] This was their 21st championship title overall and their third successive title.
Promoted from the Cork Intermediate Hurling Championship