During the 2004–05 Dutch football season, Feyenoord competed in the Eredivisie.
Season summary
Feyenoord were the Eredivisie's top scorers but they did not improve on last's seasons results and finished 4th, way off challenging for the title. The club made it to the semi-finals in the domestic KNVB cup, losing to the winner of the KNVB Cup PSV Eindhoven after penalties. In the UEFA cup they made it to the 3rd round (last 32 clubs) losing to the later finalist Sporting CP from Portugal.
Kits
Feyenoord's kits were manufactured by Italian company Kappa and sponsored by Belgian financial company Fortis.
^Castelen was born in Paramaribo, Suriname, but also qualified to represent the Netherlands internationally and made his international debut for the Netherlands in August 2004.