| Club: | Borussia Dortmund |
| Season: | 2003–04 |
| League: | Bundesliga |
| League Result: | 6th |
| League Topscorer: | Jan Koller (16) Ewerthon (16) |
| Cup1: | DFB-Pokal |
| Cup1 Result: | Second round |
| Cup2: | Champions League |
| Cup2 Result: | Third qualifying round |
| Cup3: | UEFA Cup |
| Cup3 Result: | Second round |
| Prevseason: | 2002–03 |
| Nextseason: | 2004–05 |
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During the 2003–04 German football season, Borussia Dortmund competed in the Bundesliga.
Dortmund failed to qualify for the Champions League group stage, and followed that up with a disappointing sixth-place finish in the Bundesliga. The club's poor form was mainly a result of playmaker Tomáš Rosický's absence through virtually half of the season. The poor form led to the dismissal of coach Matthias Sammer, while the club's economy got ever more strained.
Squad at end of season[1]
See main article: 2003–04 Bundesliga.
See main article: 2003–04 UEFA Champions League.
See main article: 2003–04 UEFA Cup.
