2023 Cavan Senior Football Championship

The 2023 Cavan Senior Football Championship was the 114th edition of Cavan GAA's premier Gaelic football tournament for senior graded clubs in County Cavan, Ireland. The tournament consists of 12 teams, with the winner going on to represent Cavan in the Ulster Senior Club Football Championship. The championship began on 17 August 2023.

Gowna entered the championship as defending champions, and reached the final against Kingscourt Stars. Gowna won the final by seventeen points to successfully defend their title.

Team changes
The following teams changed division since the 2022 championship season.

To Championship
Promoted from 2022 Cavan Intermediate Football Championship
 * Colours of Galway.svg Castlerahan (Intermediate Champions)

From Championship
Relegated to 2023 Cavan Intermediate Football Championship
 * Colours of Tipperary GAA.svg Butlersbridge (Relegation play-off losers)

League stage
All 12 teams enter the competition at this stage. A random draw determines which teams face each other in each of the four rounds. No team can meet each other twice in the group stage. The top eight teams go into the quarter-finals, while the bottom four teams enter the relegation play-offs. The first round draw took place on 15 May 2023.