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. Crossmaglen Rangers of Armagh were the defending champions, having defeated Down champions Burren in the 2011 final. Crossmaglen successfully defended their title after beating Down's Kilcoo in the final.