The 2014–15 Gamma Ethniki Cup was the second edition of the Gamma Ethniki Cup, a Greek football Cup competition, wherein only the clubs of the Football League 2 (the third tier of the Greek football league system) were allowed to participate.
In first round of the competition, the clubs in each Group competed against each other in single matches (overtime and penalties applied) until two clubs were declared Group winners.
The competing pairs were selected as a result of random drawing that took place on 5 September 2014.
In the second round of the competition (quarter-finals), the 8 Group winners competed against each other in single knock-out matches at the home ground of the club favored by the draw.
In the third round of the competition (semi-finals), the four clubs advancing from the Quarter-finals competed in single knockout matches at the home ground of the club favored by the draw.