The 2004–2005 Turkish Cup was the 43rd edition of the annual tournament that determined the association football Super League (Süper Lig) Turkish Cup (Turkish: Türkiye Kupası) champion under the auspices of the Turkish Football Federation (Turkish: Türkiye Futbol Federasyonu; TFF). Galatasaray successfully contested over their archrivals Fenerbahçe 5–1 in the final. The results of the tournament also determined which clubs would be promoted or relegated.