The 2017 Galway Senior Football Championship is the 122nd edition of Galway GAA's premier Gaelic football tournament for senior graded clubs in County Galway, Ireland. The winners receive the Frank Fox Cup and represent Galway in the Connacht Senior Club Football Championship. Twenty teams compete. The championship has a back-door format for the first two rounds before proceeding to a knock-out format. Generally, any team to lose two matches will be knocked out of the championship. Corofin were the defending champions after they defeated Salthill/Knocknacarra in the previous year's final.