The 1956–57 Greek Football Cup was the 15th edition of the Greek Football Cup. The competition culminated with the Greek Cup Final, held at Karaiskakis Stadium, on 29 July 1957. The match was contested by Olympiacos and Iraklis, with Olympiacos winning by 2–0.[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. If a winner doesn't occur after the replay match the winner emerges by a flip of a coin.