The 1938 Cork Senior Football Championship was the 50th staging of the Cork Senior Football Championship since its establishment by the Cork County Board in 1887. The draw for the first round fixtures took place on 30 January 1938. The championship ran from 20 March to 27 November 1938.

Carbery were the defending champions, however, they were beaten by Clonakilty in the second round.

The final was played on 27 November 1938 at the Bandon Grounds, between St Nicholas' and Clonakilty, in what was their first ever meeting in the final. St Nicholas' won the match by 2–01 to 0–02 to claim their first ever championship title.

Results First round

Duhallow received a bye in this round.

Second round

Seandún received a bye in this round.

Semi-final

Final

Championship statistics Miscellaneous St. Nicholas' make their first appearance at senior level. St. Nicholas' qualify for the final for the first time. St. Nicholas' win their first title. St. Nicholas' sister club Glen Rovers also won the Cork Hurling Championship. The following players completed the double: Paddy O'Donovan, Danny Matt Dorgan, Jack Lynch, Connie Buckley, Dan Moylan, Charlie Tobin and Tim Kiely. Clonakilty lose a sixth final seven years.

References