It began on 14 September 2002 with the first round and concluded on 17 May 2003 with the final which was held at GSP Stadium.
Anorthosis won their 8th Cypriot Cup trophy after beating AEL 5–3 on penalties in the final.
In the first and in the second round each tie was played as a single leg and was held at the home ground of one of the two teams, according to the draw results.
If both teams had scored the same number of home and away goals, then extra time was following after the end of the second leg match.
If there weren't scored any goals during extra time, the qualifying team was determined by penalty shoot-out.
The two fourth division teams which were promoted from the 2002 STOK promotion play-offs to the 2002–03 Cypriot Fourth Division after finishing to the second and third place (Evagoras Pallikarides Agion Trimithias and AOL Omonia Lakatamias) did not participate in the Cypriot Cup.
Olympos Xylofagou which finished first in the 2002 STOK promotion play-offs, participated in the Cypriot Cup.