2021 Cork Premier Senior Football Championship
The 2021 Cork Premier Senior Football Championship was the second staging of the Cork Premier Senior Football Championship and the 133rd staging overall of a championship for the top-ranking Gaelic football teams in Cork. The draw for the group stage placings took place on 29 April 2021. The championship began on 20 July 2021 and ended on 28 November 2021.
Nemo Rangers entered the championship as the [2020 County Cork|Cork Premier Senior Football Championship|defending champions], however, they failed to make it out of the group stage after suffering two defeats. Ilen Rovers were relegated after being beaten by Carrigaline in a playoff.
The final was played on 28 November 2021 at Páirc Uí Chaoimh in Cork, between Clonakilty and St. Finbarr's, in what was their second ever final meeting and their first in 11 years. St. Finbarr's won the match by 0-14 to 0-13 to claim their tenth championship title overall and a first title since 2018.
Steven Sherlock was the championship's top scorer with 3-41.
Team changes
To Championship
Promoted from the Cork Senior A Football ChampionshipFrom Championship
Relegated to the Cork Senior A Football ChampionshipParticipating teams
Clubs
The seedings were based on final group stage positions from the 2020 championship.| Team | Location | Colours | Seeding |
| Castlehaven | Castlehaven | Blue and white | 1 |
| Nemo Rangers | Trabeg | Black and green | 2 |
| St. Finbarr's | Togher | Blue and yellow | 3 |
| Newcestown | Newcestown | Red and yellow | 4 |
| Ballincollig | Ballincollig | Green and white | 5 |
| Valley Rovers | Innishannon | Green and white | 6 |
| Carbery Rangers | Rosscarbery | Green, white and gold | 7 |
| Douglas | Douglas | Black, green and white | 8 |
| Clonakilty | Clonakilty | Green and red | 9 |
| Carrigaline | Carrigaline | Blue and gold | 10 |
| Ilen Rovers | Church Cross | Green and white | 11 |
| Éire Óg | Ovens | Red and yellow | 12 |
Divisions and colleges
| Team | Location | Colours |
| Carbery | Barony of Carbery | Purple and yellow |
| Duhallow | Barony of Duhallow | Orange and black |
| Imokilly | East Cork | Red and white |
| Muskerry | Muskerry | White and green |
| University College Cork | College Road | Red and black |
Championship statistics
Top scorers
;Overall| Rank | Player | Club | Tally | Total | Matches | Average |
| 1 | Steven Sherlock | St. Finbarr's | 3-41 | 50 | 6 | 8.33 |
| 2 | Brian Hurley | Castlehaven | 4-29 | 41 | 5 | 8.20 |
| 3 | Dara Ó Sé | Clonakilty | 2-31 | 37 | 6 | 6.16 |
| 4 | Daniel Goulding | Éire Óg | 0-22 | 22 | 4 | 5.50 |
| 5 | Billy Crowley | Valley Rovers | 1-16 | 19 | 4 | 4.75 |
| 6 | Cian Dorgan | Ballincollig | 0-17 | 17 | 3 | 5.66 |
| 7 | Luke Connolly | Nemo Rangers | 2-10 | 16 | 3 | 5.33 |
| 8 | Cillian Myers-Murray | St. Finbarr's | 2-08 | 14 | 5 | 2.80 |
| 8 | Michael Hurley | Castlehaven | 2-08 | 14 | 5 | 2.80 |
| 8 | Alan O'Hare | Douglas | 1-11 | 14 | 4 | 3.50 |
| 8 | Conor Russell | Douglas | 0-14 | 14 | 4 | 3.50 |
;In a single game
| Rank | Player | Club | Tally | Total | Opposition |
| 1 | Steven Sherlock | St. Finbarr's | 2-10 | 16 | Castlehaven |
| 2 | Brian Hurley | Castlehaven | 2-09 | 15 | St. Finbarr's |
| 3 | Eoin O'Reilly | Valley Rovers | 3-02 | 11 | Carrigaline |
| 3 | Barry O'Driscoll | Nemo Rangers | 2-05 | 11 | Carirgaline |
| 3 | Dara Ó Sé | Clonakilty | 2-05 | 11 | Ilen Rovers |
| 6 | Steven Sherlock | St. Finbarr's | 0-10 | 10 | Éire Óg |
| 7 | Cillian Myers-Murray | St. Finbarr's | 2-03 | 9 | Ballincollig |
| 7 | Brian Hurley | Castlehaven | 1-06 | 9 | Éire Óg |
| 7 | Brian Hurley | Castlehaven | 1-06 | 9 | Carbery Rangers |
| 10 | Chris Óg Jones | Muskerry | 2-02 | 8 | UCC |
| 10 | Billy Crowley | Valley Rovers | 1-05 | 8 | Nemo Rangers |
| 10 | Cian Dorgan | Ballincollig | 0-08 | 8 | St. Finbarr's |
| 10 | Cian Dorgan | Ballincollig | 0-08 | 8 | Ilen Rovers |