The 1978 Meath Senior Football Championship is the 86th edition of the Meath GAA's premier club Gaelic football tournament for senior graded teams in County Meath, Ireland. The tournament consists of 16 teams, with the winner going on to represent Meath in the Leinster Senior Club Football Championship. The championship starts with a group stage and then progresses to a knock out stage. Summerhill were the defending champions after they defeated Seneschalstown after a replay in the previous years final. However, they lost their crown held for 4 years when losing to Walterstown in the final.