MTK Hungaria 0-5 Celtic FC *
| 27.08.2003 | Celtic FC | 1-0 | MTK Hungaria | |
| 13.08.2003 | MTK Hungaria | 0-4 | Celtic FC | |
MSK Zilina 0-5 Chelsea FC *
| 26.08.2003 | Chelsea FC | 3-0 | MSK Zilina | |
| 13.08.2003 | MSK Zilina | 0-2 | Chelsea FC | |
Club Brugge 3-3 Borussia Dortmund *
| 27.08.2003 | Borussia Dortmund | 2-1 AET | Club Brugge | |
| 13.08.2003 | Club Brugge | 2-1 | Borussia Dortmund | |
*Galatasaray SK 6-0 CSKA Sofia
| 27.08.2003 | CSKA Sofia | 0-3 | Galatasaray SK | |
| 13.08.2003 | Galatasaray SK | 3-0 | CSKA Sofia | |
Rosenborg BK 0-1 Deportivo La Coruña *
| 26.08.2003 | Deportivo La Coruña | 1-0 | Rosenborg BK | |
| 13.08.2003 | Rosenborg BK | 0-0 | Deportivo La Coruña | |
*Dynamo Kyiv 5-1 Dinamo Zagreb
| 27.08.2003 | Dinamo Zagreb | 0-2 | Dynamo Kyiv | |
| 12.08.2003 | Dynamo Kyiv | 3-1 | Dinamo Zagreb | |
*Rangers FC 3-2 FC København
| 27.08.2003 | FC København | 1-2 | Rangers FC | |
| 13.08.2003 | Rangers FC | 1-1 | FC København | |
*FK Partizan 1-1 Newcastle United
| 27.08.2003 | Newcastle United | 0-1/p.3-4 | FK Partizan | |
| 13.08.2003 | FK Partizan | 0-1 | Newcastle United | |
Grasshoppers 2-3 AEK Athens *
| 27.08.2003 | AEK Athens | 3-1 | Grasshoppers | |
| 13.08.2003 | Grasshoppers | 1-0 | AEK Athens | |
*Lazio 4-1 SL Benfica
| 27.08.2003 | SL Benfica | 0-1 | Lazio | |
| 13.08.2003 | Lazio | 3-1 | SL Benfica | |
Austria Wien 0-1 Olympique Marseille *
| 27.08.2003 | Olympique Marseille | 0-0 | Austria Wien | |
| 13.08.2003 | Austria Wien | 0-1 | Olympique Marseille | |
Shakhtar Donetsk 2-3 Lokomotiv Moscow *
| 27.08.2003 | Lokomotiv Moscow | 3-1 | Shakhtar Donetsk | |
| 13.08.2003 | Shakhtar Donetsk | 1-0 | Lokomotiv Moscow | |
*Celta de Vigo 3-2 Slavia Praha
| 27.08.2003 | Slavia Praha | 2-0 | Celta de Vigo | |
| 12.08.2003 | Celta de Vigo | 3-0 | Slavia Praha | |
Vardar Skopje 4-5 Sparta Praha *
| 26.08.2003 | Sparta Praha | 2-2 | Vardar Skopje | |
| 13.08.2003 | Vardar Skopje | 2-3 | Sparta Praha | |
*Anderlecht 4-1 Wisła Kraków
| 26.08.2003 | Wisła Kraków | 0-1 | Anderlecht | |
| 13.08.2003 | Anderlecht | 3-1 | Wisła Kraków | |