The 2003–04 Danish Cup was the 50th season of the Danish Cup. The final was played on 20 May 2004. FC København ended as cup winner, but as they also won the Danish Superliga, the UEFA Cup-spot went to the cup runner-up Aalborg BK.

First round

In first round competed 48 teams from the "series" (2002 Denmark Series and lower) and 16 teams from 2002–03 Danish 2nd Divisions.

Second round

In second round competed 32 winning teams from 1st round and 8 teams from 2002–03 Danish 1st Division (no. 9 to 16).

Third round

In third round competed 20 winning teams from 2nd round, 6 teams from 2002–03 Danish 1st Division (no. 3 to 8) and 2 teams from 2002–03 Danish Superliga (no. 11 and 12).

Fourth round

In fourth round competed 14 winning teams from 3rd round, 2 teams from 2002–03 Danish 1st Division (no. 1 and 2) and 4 teams from 2002–03 Danish Superliga (no. 7 to 10).

Fifth round

In fifth round competed 10 winning teams from 4th round and 6 teams from 2002–03 Danish Superliga (no. 1 to 6).

Quarter-finals

Semi-finals

The semi finals are played on home and away basis.

Final