2003–04 ULEB Cup Top 16
Eighth-final 1
| Home Team | Score | Away Team | Venue | Date | |
|---|---|---|---|---|---|
| Game 1 | Makedonikos   | 89 - 63 |  Caprabo Lleida | Kozani | February 10, 2004 | 
| Game 2 | Caprabo Lleida   | 89 - 58 |  Makedonikos | Lleida | February 17, 2004 | 
Eighth-final 2
| Home Team | Score | Away Team | Venue | Date | |
|---|---|---|---|---|---|
| Game 1 | Wallone Charleroi .svg.png)  | 56 - 74 |  Adecco Estudiantes | Charleroi | February 10, 2004 | 
| Game 2 | Adecco Estudiantes   | 84 - 91 | .svg.png) Wallone Charleroi | Madrid | February 17, 2004 | 
Eighth-final 3
| Home Team | Score | Away Team | Venue | Date | |
|---|---|---|---|---|---|
| Game 1 | Real Madrid   | 87 - 68 |  Auna Gran Canaria | Madrid | February 10, 2004 | 
| Game 2 | Auna Gran Canaria   | 63 - 61 |  Real Madrid | Las Palmas | February 17, 2004 | 
Eighth-final 4
| Home Team | Score | Away Team | Venue | Date | |
|---|---|---|---|---|---|
| Game 1 | RheinEnergie Cologne   | 81 - 70 |  Metis Varese | Cologne | February 10, 2004 | 
| Game 2 | Metis Varese   | 81 - 62 |  RheinEnergie Cologne | Varese | February 17, 2004 | 
Eighth-final 5
| Home Team | Score | Away Team | Venue | Date | |
|---|---|---|---|---|---|
| Game 1 | BK Ventspils   | 68 - 79 | .svg.png) BC Reflex | Ventspils | February 10, 2004 | 
| Game 2 | BC Reflex .svg.png)  | 95 - 89 |  BK Ventspils | Belgrade | February 17, 2004 | 
Eighth-final 6
| Home Team | Score | Away Team | Venue | Date | |
|---|---|---|---|---|---|
| Game 1 | DKV Joventut   | 78 - 62 |  Breil Milano | Badalona | February 10, 2004 | 
| Game 2 | Breil Milano   | 81 - 69 |  DKV Joventut | Milano | February 17, 2004 | 
Eighth-final 7
| Home Team | Score | Away Team | Venue | Date | |
|---|---|---|---|---|---|
| Game 1 | Hapoel Jerusalem   | 77 - 67 |  Prokom Trefl Sopot | Jerusalem | February 10, 2004 | 
| Game 2 | Prokom Trefl Sopot   | 86 - 82 |  Hapoel Jerusalem | Sopot | February 17, 2004 | 
Eighth-final 8
| Home Team | Score | Away Team | Venue | Date | |
|---|---|---|---|---|---|
| Game 1 | Lukoil Academic   | 77 - 80 |  Lietuvos Rytas | Sofia | February 10, 2004 | 
| Game 1 | Lietuvos Rytas   | 105 - 78 |  Lukoil Academic | Vilnius | February 17, 2004 |