The 2020 Dublin Senior Football Championship was the 134th edition of Dublin GAA's premier gaelic football tournament for senior clubs in County Dublin, Ireland. 32 teams participate (16 in Senior 1 and 16 in Senior 2), with the winner of Senior 1 representing Dublin in the Leinster Senior Club Football Championship. Ballyboughal won the 2019 I.F.C. and were promoted along with I.F.C. finalists Trinity Gaels to Senior 2. They replaced St. Patrick's Palmerstown and Round Towers Clondalkin who were relegated to the 2020 I.F.C.