At the 2017 Longford Senior Football Championship ( Twelve teams registerd at the competition; groups A and B is made up of four seeded teams (last year's quarter-finalist) with three teams from each group advancing to the Quarter finals.
The 2017 tournament consisted of 12 teams, with the winner going on to represent Longford in the Leinster Senior Club Football Championship. Groups A and B each consisted of 4 seeded teams (the previous year's quarter-finalists) with 3 teams from each group progressing to the Quarter-Finals. 
