| 1903 Cork Senior Football Championship | |
| Champions: | Lees |
| Count: | 5 |
| Runners-Up: | Dohenys |
| Previous Year: | 1902 |
| Previous Tournament: | 1902 Cork Senior Football Championship |
| Next Year: | 1904 |
| Next Tournament: | 1904 Cork Senior Football Championship |
The 1903 Cork Senior Football Championship was the 17th staging of the Cork Senior Football Championship since its establishment by the Cork County Board in 1887.
Lees were the defending champions.
Lees won the championship following a 1–07 to 0–02 defeat of Dohenys in the final at Cork Park.[1] This was their fifth title overall and their second title in succession.