| 1939 Cork Senior Football Championship | |
| Dates: | 26 March 1939 – 12 November 1939 |
| Teams: | 14 |
| Champions: | Clonakilty |
| Count: | 1 |
| Champions Captain: | Pat Nyhan |
| Runners-Up: | Beara |
| Matches: | 12 |
| Goals: | 44 |
| Points: | 111 |
| Previous Year: | 1938 |
| Previous Tournament: | 1938 Cork Senior Football Championship |
| Next Year: | 1940 |
| Next Tournament: | 1940 Cork Senior Football Championship |
The 1939 Cork Senior Football Championship was the 51st staging of the Cork Senior Football Championship since its establishment by the Cork County Board in 1887. The draw for the opening round fixtures took place on 7 February 1939.
St. Nicholas' entered the championship as the defending champions, however, they were beaten by Beara in the semi-final.
On 12 November 1939, Clonakilty won the championship following a 0–07 to 0–05 defeat of Beara in the final at Skibbereen Town Park.[1] This was their first championship title.