| 1943 Cork Senior Football Championship | |
| Champions: | Clonakilty |
| Count: | 3 |
| Champions Captain: | Tadhgo Crowley |
| Runners-Up: | Fermoy |
| Runners-Up Captain: | Dave Magnier |
| Previous Year: | 1942 |
| Previous Tournament: | 1942 Cork Senior Football Championship |
| Next Year: | 1944 |
| Next Tournament: | 1944 Cork Senior Football Championship |
The 1943 Cork Senior Football Championship was the 55th staging of the Cork Senior Football Championship since its establishment by the Cork County Board in 1887.
Clonakilty entered the championship as the defending champions.
On 17 October 1943, Clonakilty won the championship following a 2–05 to 1–04 defeat of Fermoy in the final.[1] This was their third championship title overall and their second title in succession.