The 2014–15 Greek Basketball Cup competition was the 40th edition of the top-tier level professional national domestic basketball cup competition of Greece. The competition started on September 21, 2014, and ended on April 5, 2015.
The top six placed teams from the top-tier levelGreek Basket League2013–14 season had an automatic bye to the quarterfinals. While the eight lower placed teams from the Greek Basket League 2013–14 season, along with the 14 teams from the 2nd-tier level Greek A2 Basket League2014–15 season, played in preliminary rounds, competing for the other two quarterfinals places. The quarterfinals and onward rounds were played under a single elimination format.