The 1939 All-Ireland Senior Football Championship was the 53rd staging of Ireland's premier Gaelic football knock-out competition.

Galway entered the championship as defending champions; however, they were beaten by Mayo in the Connacht final.

Involved were Longford, Carlow, Westmeath & Wicklow of course the winners qualified for a quarterfinal to meet the stronger teams.

In 1939 Kerry were given a bye to the Munster final, preliminary round was just a lone match between Cork vs Waterford, the winners of the game played in the quarterfinals along with Tipperary, Limerick and Clare, the winners of the game played in a lone Semifinal.

The All-Ireland Senior Football Championship was run on a provincial basis as usual in every 3rd year in rotation, with the four winners from Connacht, Leinster, Munster and Ulster advancing to the All-Ireland semi-finals.