1989 Cork Senior Football Championship
The 1989 Cork Senior Football Championship was the 101st 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 18 December 1988. The championship began on 16 April 1989 and ended on 29 October 1989.
Nemo Rangers entered the championship as the defending champions, however, they were defeated by St. Finbarr's in a semi-final replay.
On 29 October 1989, Castlehaven won the championship following a 0-09 to 0-07 defeat of St. Finbarr's in the final. This was their first championship title.
Eoin O'Mahony from the Nemo Rangers club was the championship's top scorer with 2-14.
Team changes
To Championship
Promoted from the Cork Intermediate Football ChampionshipFrom Championship
Regraded to the Cork Intermediate Football ChampionshipChampionship statistics
Top scorers
;Top scorers overall| Rank | Player | Club | Tally | Total | Matches | Average |
| 1 | Eoin O'Mahony | Nemo Rangers | 2-14 | 20 | 4 | 5.00 |
| 2 | Larry Tompkins | Castlehaven | 0-18 | 18 | 4 | 4.50 |
| 3 | Dave Barry | St. Finbarr's | 0-17 | 17 | 5 | 3.40 |
| 4 | John Griffin | St. Finbarr's | 1-11 | 14 | 5 | 2.80 |
| 5 | Mick McCarthy | O'Donovan Rossa | 0-13 | 13 | 2 | 6.50 |
| 5 | Mick Mullins | Na Piarsaigh | 0-13 | 13 | 3 | 4.66 |
| 7 | Michael O'Mahony | Castlehaven | 2-06 | 12 | 4 | 3.00 |
| 8 | Steven O'Brien | Nemo Rangers | 3-02 | 11 | 4 | 2.75 |
| 9 | Barry Harte | Carbery | 0-10 | 10 | 2 | 5.00 |
| 10 | Michael Barry | St. Finbarr's | 2-03 | 9 | 5 | 1.80 |
;Top scorers in a single game
| Rank | Player | Club | Tally | Total | Opposition |
| 1 | Eoin O'Mahony | Nemo Rangers | 1-06 | 9 | Avondhu |
| 2 | Mick McCarthy | O'Donovan Rossa | 0-08 | 8 | Na Piarsaigh |
| 2 | Mick Mullins | Na Piarsaigh | 0-08 | 8 | O'Donovan Rossa |
| 2 | Barry Harte | Carbery | 0-08 | 8 | Castlehaven |
| 5 | Larry Tompkins | Castlehaven | 0-07 | 7 | Carbery |
| 5 | Dave Barry | St. Finbarr's | 0-07 | 7 | UCC |
| 5 | Dave Barry | St. Finbarr's | 0-07 | 7 | Nemo Rangers |
| 8 | John Caulfield | Carbery | 1-03 | 6 | Kilshannig |
| 8 | - | - | - | - | - |
| 8 | - | - | - | - | - |
Miscellaneous
- Castlehaven win their first senior title.