The 1947–48 Greek Football Cup was the sixth edition of the Greek Football Cup. The competition culminated with the Greek Cup Final, held at Leoforos Alexandras Stadium, on 20 June 1948. The match was contested by Panathinaikos and AEK Athens, with Panathinaikos winning by 2–1.

In the knockout phase, teams play against each other over a single match. If the match ends up as a draw, extra time will be played and if the match remains a draw a replay match is set at the home of the guest team which the extra time rule stands as well. That procedure will be repeated until a winner occurs.
The mechanism of the draws for each round is as follows:

• In the draw for the twelfth, the five top teams of each association are seeded and the eight clubs that passed the qualification round are unseeded.
  Three of the seeded teams are drawn against three of the unseeded teams. The rest three of the seeded times proceed to the quarter-finals while the remaining four of the unseeded teams are drawn against each other.
• In the draws for the quarter-finals onwards, there are no seedings, and teams from the same group can be drawn against each other.

The 6th Greek Cup Final was played at the Leoforos Alexandras Stadium.

Mathios Vitalis Spyros Bogdanos Tasos Kritikos Gavrilos Gazis Vaggelis Nikolopoulos Alekos Chionidis Stefanos Dialetis Antonis Papantoniou Giannis Petsanas Nikos Simos Babis Fylaktos Manager: Antonis Migiakis

Michalis Delavinias Giorgos Gasparis Goulios Arvanitis Giannis Vlantis Tryfon Tzanetis Giorgos Mageiras Pavlos Emmanouilidis Lelos Adamidis Kleanthis Maropoulos Giannis Papantoniou Xenofon Markopoulos Manager: Jack Beby