See main article: 2003–04 ULEB Cup.
| width=50 | width=160 align=right | Home Team | width=100 | Score | width=160 align=left | Away Team | width=100 | Venue | width=200 align=left | Date | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Game 1 | Hapoel Jerusalem  | 79 - 72 |  Lietuvos Rytas | Jerusalem | March 2, 2004 | ||||||
| Game 2 | Lietuvos Rytas | 81 - 80 | Hapoel Jerusalem | Vilnius | March 9, 2004 |
| width=50 | width=160 align=right | Home Team | width=100 | Score | width=160 align=left | Away Team | width=100 | Venue | width=200 align=left | Date | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Game 1 | Caprabo Lleida  | 82 - 73 | Adecco Estudiantes | Lleida | March 2, 2004 | ||||||
| Game 2 | Adecco Estudiantes | 96 - 68 | Caprabo Lleida | Madrid | March 9, 2004 |
| width=50 | width=160 align=right | Home Team | width=100 | Score | width=160 align=left | Away Team | width=100 | Venue | width=200 align=left | Date | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Game 1 | Real Madrid | 68 - 67 |  Metis Varese | Madrid | March 2, 2004 | ||||||
| Game 2 | Metis Varese | 57 - 62 | Real Madrid | Varese | March 9, 2004 |
| width=50 | width=160 align=right | Home Team | width=100 | Score | width=160 align=left | Away Team | width=100 | Venue | width=200 align=left | Date | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Game 1 | 81 - 73 | DKV Joventut | Belgrade | March 2, 2004 | |||||||
| Game 2 | DKV Joventut | 83 - 79 | BC Reflex | Badalona | March 9, 2004 |