| 1945 Cork Senior Football Championship | |
| Champions: | Fermoy |
| Count: | 7 |
| Champions Captain: | Paddy Cronin |
| Runners-Up: | Clonakilty |
| Runners-Up Captain: | Dessie Cullinane |
| Previous Year: | 1944 |
| Previous Tournament: | 1944 Cork Senior Football Championship |
| Next Year: | 1946 |
| Next Tournament: | 1946 Cork Senior Football Championship |
The 1945 Cork Senior Football Championship was the 57th 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.[1]
On 21 October 1945, Fermoy won the championship following a 0–06 to 0–03 defeat of Clonakilty in the final. This was their 7th championship title overall and their first title since 1906.