| 1966 Cork Senior Football Championship | |
| Dates: | 10 April 1966 – 4 December 1966 |
| Teams: | 16 |
| Champions: | St. Nicholas' |
| Count: | 5 |
| Champions Captain: | Jackie Daly |
| Runners-Up: | St. Finbarr's |
| Runners-Up Captain: | Gus Harrington |
| Matches: | 17 |
| Goals: | 38 |
| Points: | 248 |
| Previous Year: | 1965 |
| Previous Tournament: | 1965 Cork Senior Football Championship |
| Next Year: | 1967 |
| Next Tournament: | 1967 Cork Senior Football Championship |
The 1966 Cork Senior Football Championship was the 78th 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 30 January 1966. The championship began on 10 April 1966 and ended on 4 December 1966.
St. Nicholas' entered the championship as the defending champions.
On 4 December 1966, St. Nicholas' won the championship following a 1–07 to 1–06 defeat of St. Finbarr's in the final.[1] This was their fifth championship title overall and their second title in succession.
Promoted from the Cork Intermediate Football Championship
Declined to field a team