2021 Donegal Senior Football Championship
| Season | 2021 |
|---|---|
| Champions | St Eunan's (15th title) |
| Winning captain | Niall O'Donnell |
| Man of the Match | Shane O'Donnell |
| Winning manager | Rory Kavanagh |
| Matches played | 46 |
← 2020 2022 → | |
The 2021 Donegal Senior Football Championship was the 99th official edition of Donegal GAA's premier Gaelic football tournament for senior graded clubs in County Donegal. 16 teams competed, with the winner representing Donegal in the Ulster Senior Club Football Championship.
Naomh Conaill was defending champion after defeating Cill Chartha in a penalty competition held after extra-time of the 2020 final.
Naomh Conaill advanced to the 2021 final, but lost to St Eunan's.