The 2018 Offaly Senior Football Championship was the 121st edition of the competition by Offaly GAA, one of the GAA's 32 country boards.
The Offaly County Board of the Gaelic Athletic Association (GAA) (Irish: Cumann Luthchleas Gael Coiste Uibh Fhaili) or Offaly GAA is one of the 32 county boards of the GAA in Ireland, and is responsible for Gaelic games in County Offaly. 
