The 2019 Mayo Senior Football Championship was the 118th edition of the Mayo GAA's premier gaelic football tournament for senior clubs in County Mayo, Ireland. Sixteen teams competed with the winners going on to represent Mayo in the Connacht Senior Club Football Championship. The championship started with a group stage and progressed to a knock out stage. The winners received the Paddy Moclair Cup. Hollymount-Carramore were relegated to the 2020 I.F.C. after 4 seasons in the top-flight of Mayo football when losing their Relegation Final to Moy Davitts.