There were eight teams in the quarter-finals of the 198889 Turkish Cup, (which was the 27th edition of the annual tournament that determined the association football Sper Lig Turkish Cup champion) and the team with the highest aggregate score was Fenerbahe, while the team with the lowest aggregate score was Karyaka.
The 1988-89 Turkish Cup was the 27th edition of the annual tournament that determined the association football Super Lig Turkish Cup (Turkish: Turkiye Kupas) champion under the auspices of the Turkish Football Federation (Turkish: Turkiye Futbol Federasyonu; TFF). Fenerbahce 65 Malatyaspor 51 Konyaspor 3-2 Karsyaka 0-4 Galatasaray 22 Bakrkoyspor 20 Saryer 32 Besiktas 03 
