| 1948 Cork Senior Football Championship | |
| Champions: | Millstreet |
| Count: | 1 |
| Champions Captain: | John O'Keeffe |
| Runners-Up: | St. Vincent's |
| Runners-Up Captain: | Eddie John O'Sullivan |
| Previous Year: | 1947 |
| Previous Tournament: | 1947 Cork Senior Football Championship |
| Next Year: | 1949 |
| Next Tournament: | 1949 Cork Senior Football Championship |
The 1948 Cork Senior Football Championship was the 60th 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 31 October 1948, Millstreet won the championship following a 1–02 to 0–03 defeat of St. Vincent's in the final at the Cork Athletic Grounds. It remains their only championship title.