2023 Ulster Senior Club Football Championship

The 2023 Ulster Senior Club Football Championship is the 55th instalment of the annual competition organised by Ulster GAA. It is one of the four provincial competitions of the 2023–24 All-Ireland Senior Club Football Championship and is played in a straight knockout format. The championship draw was made on 7 September 2023.

Derry's Glen entered the championship as the defending champions, and reached the final for the second year in a row, where they played Monaghan champions Scotstown. Glen won the match by 0–13 to 0–11 to win their second Ulster title.

Teams
The Ulster championship is contested by the winners of the nine county championships in the Irish province of Ulster. Ulster comprises the six counties of Northern Ireland, as well as Cavan, Donegal and Monaghan in the Republic of Ireland.