2018 Tyrone Senior Football Championship

16 teams compete with the winners receiving the O'Neill Cup and representing Tyrone in the Ulster Senior Club Football Championship.

Omagh St. Enda's were the defending champions after they defeated Errigal Ciarán in the 2017 final.

However the defence of their title came undone at the quarter-final stage when losing to eventual finalists Killyclogher St.

[1] Moy Tír na nÓg, Derrylaughan Kevin Barry's and Aghyaran St. Davog's returned to senior championship football in 2018.

[2][3] Galbally Pearses made the drop back down to the Intermediate ranks when finishing bottom of the 2018 S.F.L.

If the championship winner finishes in the bottom 3 in the league, the 13th placed team enters the relegation scenario.)