The 2004-05 KNVB Cup (at the time called Amstel Cup) was the 87th edition of the Dutch national football annual knockout tournament for the KNVB Cup. 85 teams contested, beginning on 7 August 2004 and ending at the final on 29 May 2005. PSV beat Willem II 4–0, winning the trophy for the eighth time.

Participants

A total of 85 clubs participated in this year's edition:

First round

The matches of the first round were played on August 7 and 10, 2004. E Eredivisie; 1 Eerste Divisie; A Amateur teams

Second round

The matches of the second round were played on September 21, and 22, 2005. NEC Nijmegen received a bye for the first round and entered the tournament here. E one Eredivisie entrant

Third round

The matches of the third round were played on November 9, and 10, 2004.

Round of 16

The matches were played on January 25, 26 and 27, 2005. Six Eredivisie clubs entered the tournament here, because they had been playing in the Champions League and UEFA Cup. E six Eredivisie entrants

Quarter-finals

The matches were played on 1-2 March 2005.

Semi-finals

Final

PSV also won the Dutch Eredivisie championship, thereby taking the double. They would participate in the Champions League, so finalists Willem II could play in the UEFA Cup.