The 2012 Ulster Senior Club Football Championship was the 45th instalment of the annual competition organised by Ulster GAA.

It was one of the four provincial competitions of the 2012–13 All-Ireland Senior Club Football Championship.

[1] Crossmaglen successfully defended their title after beating Down's Kilcoo in the final.

[2] 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.