1st(1st leg) Dinamo Kiev - Dinamo Zagreb 3:1 (2:1)
2nd (2nd leg) Dinamo Zagreb - Dinamo Kiev 0:2 (0:0)
1st(1st leg): 12/08/2003 18:00 2nd (2nd leg): 27/08/2003 19:45 Winner: Dinamo Kiev
1st(1st leg) Grazer AK - AFC Ajax 1:1 (0:0)
2nd (2nd leg) AFC Ajax - Grazer AK 2:1 (1:1, 1:1) aet
1st(1st leg): 12/08/2003 19:30 2nd (2nd leg): 27/08/2003 19:30 Winner: AFC Ajax
1st(1st leg) Celta Vigo - Slavia Praha 3:0 (1:0)
2nd (2nd leg) Slavia Praha - Celta Vigo 2:0 (2:0)
1st(1st leg): 12/08/2003 20:30 2nd (2nd leg): 27/08/2003 19:45 Winner: Celta Vigo
1st(1st leg) Shakhtar Donetsk - Lokomotiv Moskva 1:0 (0:0)
2nd (2nd leg) Lokomotiv Moskva - Shakhtar Donetsk 3:1 (2:0)
1st(1st leg): 13/08/2003 17:00 2nd (2nd leg): 27/08/2003 17:00 Winner: Lokomotiv Moskva
1st(1st leg) Vardar Skopje - Sparta Praha 2:3 (0:2)
2nd (2nd leg) Sparta Praha - Vardar Skopje 2:2 (1:1)
1st(1st leg): 13/08/2003 19:00 2nd (2nd leg): 26/08/2003 16:00 Winner: Sparta Praha
1st(1st leg) MŠK Žilina - Chelsea FC 0:2 (0:1)
2nd (2nd leg) Chelsea FC - MŠK Žilina 3:0 (1:0)
1st(1st leg): 13/08/2003 19:00 2nd (2nd leg): 26/08/2003 19:45 Winner: Chelsea FC
1st(1st leg) Galatasaray - CSKA Sofia 3:0 (3:0)
2nd (2nd leg) CSKA Sofia - Galatasaray 0:3 (0:1)
1st(1st leg): 13/08/2003 19:00 2nd (2nd leg): 27/08/2003 18:30 Winner: Galatasaray
1st(1st leg) MTK Budapest - Celtic FC 0:4 (0:2)
2nd (2nd leg) Celtic FC - MTK Budapest 1:0 (1:0)
1st(1st leg): 13/08/2003 19:00 2nd (2nd leg): 27/08/2003 19:45 Winner: Celtic FC
1st(1st leg) Austria Wien - Olympique Marseille 0:1 (0:1)
2nd (2nd leg) Olympique Marseille - Austria Wien 0:0 (0:0)
1st(1st leg): 13/08/2003 19:30 2nd (2nd leg): 27/08/2003 19:50 Winner: Olympique Marseille
1st(1st leg) Club Brugge KV - Borussia Dortmund 2:1 (2:0)
2nd (2nd leg) Borussia Dortmund - Club Brugge KV 2:4 (1:1, 2:1, 2:1) pso
1st(1st leg): 13/08/2003 19:30 2nd (2nd leg): 27/08/2003 19:30 Winner: Club Brugge KV
1st(1st leg) Grasshopper Club Zürich - AEK Athen 1:0 (0:0)
2nd (2nd leg) AEK Athen - Grasshopper Club Zürich 3:1 (3:0)
1st(1st leg): 13/08/2003 19:30 2nd (2nd leg): 27/08/2003 19:30 Winner: AEK Athen
1st(1st leg) RSC Anderlecht - Wisła Kraków 3:1 (2:0)
2nd (2nd leg) Wisła Kraków - RSC Anderlecht 0:1 (0:0)
1st(1st leg): 13/08/2003 19:30 2nd (2nd leg): 26/08/2003 20:00 Winner: RSC Anderlecht
1st(1st leg) Partizan - Newcastle United 0:1 (0:1)
2nd (2nd leg) Newcastle United - Partizan 3:5 (0:0, 0:1, 0:1) pso
1st(1st leg): 13/08/2003 19:30 2nd (2nd leg): 27/08/2003 19:45 Winner: Partizan
1st(1st leg) Rosenborg BK - Deportivo La Coruña 0:0 (0:0)
2nd (2nd leg) Deportivo La Coruña - Rosenborg BK 1:0 (1:0)
1st(1st leg): 13/08/2003 19:45 2nd (2nd leg): 26/08/2003 20:30 Winner: Deportivo La Coruña
1st(1st leg) Rangers FC - FC København 1:1 (1:0)
2nd (2nd leg) FC København - Rangers FC 1:2 (0:0)
1st(1st leg): 13/08/2003 19:45 2nd (2nd leg): 27/08/2003 19:05 Winner: Rangers FC
1st(1st leg) Lazio Roma - SL Benfica 3:1 (1:0)
2nd (2nd leg) SL Benfica - Lazio Roma 0:1 (0:1)
1st(1st leg): 13/08/2003 20:00 2nd (2nd leg): 27/08/2003 21:00 Winner: Lazio Roma