1st(1st leg) FK Mladá Boleslav - KF Skënderbeu 2:1 (1:0)
2nd (2nd leg) KF Skënderbeu - FK Mladá Boleslav 4:2 (0:1, 2:1, 2:1) pso
1st(1st leg): 27/07/2017 17:00 2nd (2nd leg): 03/08/2017 19:00 Winner: KF Skënderbeu
1st(1st leg) FK Trakai - KF Shkëndija 79 2:1 (1:1)
2nd (2nd leg) KF Shkëndija 79 - FK Trakai 3:0 (2:0)
1st(1st leg): 27/07/2017 17:30 2nd (2nd leg): 03/08/2017 16:00 Winner: KF Shkëndija 79
1st(1st leg) Olimpik Donetsk - PAOK Saloniki 1:1 (0:0)
2nd (2nd leg) PAOK Saloniki - Olimpik Donetsk 2:0 (2:0)
1st(1st leg): 27/07/2017 17:30 2nd (2nd leg): 03/08/2017 19:00 Winner: PAOK Saloniki
1st(1st leg) Maccabi Tel Aviv - Panionios GSS 1:0 (0:0)
2nd (2nd leg) Panionios GSS - Maccabi Tel Aviv 0:1 (0:0)
1st(1st leg): 27/07/2017 17:45 2nd (2nd leg): 03/08/2017 20:00 Winner: Maccabi Tel Aviv
1st(1st leg) PSV Eindhoven - NK Osijek 0:1 (0:0)
2nd (2nd leg) NK Osijek - PSV Eindhoven 1:0 (1:0)
1st(1st leg): 27/07/2017 18:00 2nd (2nd leg): 03/08/2017 19:45 Winner: NK Osijek
1st(1st leg) FK Krasnodar - Lyngby BK 2:1 (0:0)
2nd (2nd leg) Lyngby BK - FK Krasnodar 1:3 (1:2)
1st(1st leg): 27/07/2017 18:00 2nd (2nd leg): 03/08/2017 18:45 Winner: FK Krasnodar
1st(1st leg) Sturm Graz - Fenerbahçe 1:2 (1:2)
2nd (2nd leg) Fenerbahçe - Sturm Graz 1:1 (1:0)
1st(1st leg): 27/07/2017 18:00 2nd (2nd leg): 03/08/2017 18:30 Winner: Fenerbahçe
1st(1st leg) Östersunds FK - CS FOLA Esch 1:0 (0:0)
2nd (2nd leg) CS FOLA Esch - Östersunds FK 1:2 (0:0)
1st(1st leg): 27/07/2017 18:00 2nd (2nd leg): 03/08/2017 18:30 Winner: Östersunds FK
1st(1st leg) FC Utrecht - Lech Poznań 0:0 (0:0)
2nd (2nd leg) Lech Poznań - FC Utrecht 2:2 (1:1)
1st(1st leg): 27/07/2017 18:00 2nd (2nd leg): 03/08/2017 19:15 Winner: FC Utrecht
1st(1st leg) AEK Larnaca - Dinamo Minsk 2:0 (1:0)
2nd (2nd leg) Dinamo Minsk - AEK Larnaca 1:1 (0:0)
1st(1st leg): 27/07/2017 18:00 2nd (2nd leg): 03/08/2017 16:00 Winner: AEK Larnaca
1st(1st leg) AIK Solna - Sporting Braga 1:1 (1:1)
2nd (2nd leg) Sporting Braga - AIK Solna 2:1 (0:1, 1:1) aet
1st(1st leg): 27/07/2017 18:00 2nd (2nd leg): 03/08/2017 21:00 Winner: Sporting Braga
1st(1st leg) FK Sūduva - FC Sion 3:0 (2:0)
2nd (2nd leg) FC Sion - FK Sūduva 1:1 (0:0)
1st(1st leg): 27/07/2017 18:00 2nd (2nd leg): 02/08/2017 17:00 Winner: FK Sūduva
1st(1st leg) Bnei Yehuda Tel Aviv - Zenit St. Petersburg 0:2 (0:0)
2nd (2nd leg) Zenit St. Petersburg - Bnei Yehuda Tel Aviv 0:1 (0:0)
1st(1st leg): 27/07/2017 18:30 2nd (2nd leg): 03/08/2017 18:00 Winner: Zenit St. Petersburg
1st(1st leg) Astra Giurgiu - FK Oleksandriya 0:0 (0:0)
2nd (2nd leg) FK Oleksandriya - Astra Giurgiu 1:0 (1:0)
1st(1st leg): 27/07/2017 18:30 2nd (2nd leg): 03/08/2017 18:00 Winner: FK Oleksandriya
1st(1st leg) Dinamo Bucureşti - Athletic Club 1:1 (0:1)
2nd (2nd leg) Athletic Club - Dinamo Bucureşti 3:0 (2:0)
1st(1st leg): 27/07/2017 18:30 2nd (2nd leg): 03/08/2017 19:45 Winner: Athletic Club
1st(1st leg) Botev Plovdiv - CS Marítimo 0:0 (0:0)
2nd (2nd leg) CS Marítimo - Botev Plovdiv 2:0 (1:0)
1st(1st leg): 27/07/2017 18:30 2nd (2nd leg): 03/08/2017 19:00 Winner: CS Marítimo
1st(1st leg) CS Universitatea Craiova - AC Milan 0:1 (0:1)
2nd (2nd leg) AC Milan - CS Universitatea Craiova 2:0 (1:0)
1st(1st leg): 27/07/2017 19:00 2nd (2nd leg): 03/08/2017 19:45 Winner: AC Milan
1st(1st leg) Arka Gdynia - FC Midtjylland 3:2 (2:2)
2nd (2nd leg) FC Midtjylland - Arka Gdynia 2:1 (0:0)
1st(1st leg): 27/07/2017 19:00 2nd (2nd leg): 03/08/2017 19:30 Winner: FC Midtjylland
1st(1st leg) Brøndby IF - Hajduk Split 0:0 (0:0)
2nd (2nd leg) Hajduk Split - Brøndby IF 2:0 (0:0)
1st(1st leg): 27/07/2017 19:00 2nd (2nd leg): 03/08/2017 19:30 Winner: Hajduk Split
1st(1st leg) Panathinaikos - Gabala FK 1:0 (1:0)
2nd (2nd leg) Gabala FK - Panathinaikos 1:2 (0:0)
1st(1st leg): 27/07/2017 19:30 2nd (2nd leg): 03/08/2017 18:00 Winner: Panathinaikos
1st(1st leg) KAA Gent - SCR Altach 1:1 (0:1)
2nd (2nd leg) SCR Altach - KAA Gent 3:1 (1:1)
1st(1st leg): 27/07/2017 19:30 2nd (2nd leg): 03/08/2017 19:30 Winner: SCR Altach
1st(1st leg) Girondins Bordeaux - Videoton FC 2:1 (2:1)
2nd (2nd leg) Videoton FC - Girondins Bordeaux 1:0 (1:0)
1st(1st leg): 27/07/2017 19:30 2nd (2nd leg): 03/08/2017 18:00 Winner: Videoton FC
1st(1st leg) Crvena Zvezda - AC Sparta Praha 2:0 (1:0)
2nd (2nd leg) AC Sparta Praha - Crvena Zvezda 0:1 (0:1)
1st(1st leg): 27/07/2017 19:30 2nd (2nd leg): 03/08/2017 18:00 Winner: Crvena Zvezda
1st(1st leg) Olympique Marseille - KV Oostende 4:2 (2:1)
2nd (2nd leg) KV Oostende - Olympique Marseille 0:0 (0:0)
1st(1st leg): 27/07/2017 19:45 2nd (2nd leg): 03/08/2017 19:45 Winner: Olympique Marseille
1st(1st leg) Dinamo Zagreb - Odds BK 2:1 (2:1)
2nd (2nd leg) Odds BK - Dinamo Zagreb 0:0 (0:0)
1st(1st leg): 27/07/2017 19:45 2nd (2nd leg): 03/08/2017 17:30 Winner: Dinamo Zagreb
1st(1st leg) Aberdeen FC - Apollon Limassol 2:1 (1:0)
2nd (2nd leg) Apollon Limassol - Aberdeen FC 2:0 (1:0)
1st(1st leg): 27/07/2017 19:45 2nd (2nd leg): 03/08/2017 18:00 Winner: Apollon Limassol
1st(1st leg) Austria Wien - AEL Limassol 0:0 (0:0)
2nd (2nd leg) AEL Limassol - Austria Wien 1:2 (0:1)
1st(1st leg): 27/07/2017 20:05 2nd (2nd leg): 02/08/2017 17:00 Winner: Austria Wien
1st(1st leg) Everton FC - MFK Ružomberok 1:0 (0:0)
2nd (2nd leg) MFK Ružomberok - Everton FC 0:1 (0:0)
1st(1st leg): 27/07/2017 20:05 2nd (2nd leg): 03/08/2017 19:45 Winner: Everton FC
1st(1st leg) SC Freiburg - NK Domžale 1:0 (1:0)
2nd (2nd leg) NK Domžale - SC Freiburg 2:0 (0:0)
1st(1st leg): 27/07/2017 20:05 2nd (2nd leg): 03/08/2017 20:05 Winner: NK Domžale