The 2004–05 Croatian Football Cup was the fourteenth season of Croatia's football knockout competition.
The preliminary round was held on 7 September 2004.
First round was held on 21 and 22 September 2004.
Second round was held between 12 and 27 October 2004.
First legs were held between 8 and 15 March and second legs between 15 and 31 March 2005.
Hajduk Split won 3–2 on aggregate.
Rijeka won 6–4 on aggregate.
Rijeka won 3–1 on aggregate.