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<section begin=thirdroundmatch />
{{TwoLegStart}}
{{TwoLegResult|Pemenang match 11Lokomotiva|CRO||[[FC Vorskla Poltava|Vorskla Poltava]]|UKR|<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|[[AS Saint-Étienne|Saint-Étienne]]|FRA||[[AEK Athens F.C.|AEK Athens]]|GRE|<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|Pemenang[[AEK matchLarnaca 29F.C.|AEK Larnaca]]|CYP||[[FC Spartak Moscow|Spartak Moscow]]|RUS|<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|[[CS Pandurii Târgu Jiu|Pandurii Târgu Jiu]]|ROU||Pemenang[[Maccabi matchTel 25Aviv F.C.|Maccabi Tel Aviv]]|ISR|<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|Pemenang[[FK match 4Vojvodina|Vojvodina]]|SRB|Pemenang|[[FC matchDinamo Minsk|Dinamo 2Minsk]]|BLR|<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|[[FC Luzern|Luzern]]|SUI||[[U.S. Sassuolo Calcio|Sassuolo]]|ITA|<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|Pemenang[[SK matchSlavia 31Prague|Slavia Prague]]|CZE|[[Rio Ave F.C.|Rio Ave]]|POR|<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|Pemenang match 17Birkirkara|MLT||[[FC Krasnodar|Krasnodar]]|RUS|<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|[[AZ Alkmaar|AZ]]|NED||PemenangPAS match 16Giannina|GRE|<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|Pemenang match 20Jelgava|LVA||Pemenang[[Beitar matchJerusalem F.C.|Beitar 21Jerusalem]]|ISR|<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|Pemenang[[FK matchAustria 8Wien|Austria Wien]]|AUT|Pemenang|[[FC matchSpartak Trnava|Spartak 1Trnava]]|SVK|<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|Pemenang match 30|||[[Panathinaikos F.C.|Panathinaikos]]|GRE||[[AIK Fotboll|AIK]]|SWE|<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|Pemenang match 15[[Osmanlıspor]]|TUR||Pemenang matchNõmme 5Kalju|EST|<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|Pemenang[[Aberdeen match 23F.C.|Aberdeen]]|SCO|Pemenang|[[NK match 18Maribor|Maribor]]|SVN|<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|[[Lille OSC|Lille]]|FRA||Pemenang match 9Gabala|AZE|<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|[[FC Oleksandriya]]|UKR||Pemenang[[HNK matchHajduk 27Split|Hajduk Split]]|CRO|<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|[[Hertha BSC]]|GER||Pemenang[[Brøndby match 6IF|Brøndby]]|DEN|<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|[[İstanbul Başakşehir F.K.|İstanbul Başakşehir]]|TUR||[[HNK Rijeka|Rijeka]]|CRO|<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|[[Heracles Almelo]]|NED||[[F.C. Arouca|Arouca]]|POR|<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|PemenangTorpedo-BelAZ match 26Zhodino|BLR||[[SK Rapid Wien|Rapid Wien]]|AUT|<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|Pemenang[[K.R.C. match 32Genk|Genk]]|BEL|Pemenang match|Cork 24City|IRL|<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|Pemenang match 12Shkëndija|MKD||[[FK Mladá Boleslav|Mladá Boleslav]]|CZE|<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|[[NK Domžale|Domžale]]|SVN||[[West Ham United F.C.|West Ham United]]|ENG||Pemenang match 7||<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|Pemenang[[Videoton match 28FC|Videoton]]|HUN|Pemenang|[[FC match 14Midtjylland|Midtjylland]]|DEN|<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|Pemenang[[IFK match 19Göteborg]]|SWE||Pemenang[[Helsingin match 10Jalkapalloklubi|HJK]]|FIN|<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|PemenangAdmira matchWacker 22Mödling|AUT||[[FC Slovan Liberec|Slovan Liberec]]|CZE|<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|[[K.A.A. Gent|Gent]]|BEL||[[FC Viitorul Constanța|Viitorul Constanța]]|ROU|<small>28 Juli<small>|<small>4 Agustus<small>}}
{{TwoLegResult|Pemenang[[Grasshopper matchClub 13Zürich|Grasshopper]]|SUI||[[Apollon Limassol]]|CYP|<small>28 Juli<small>|<small>4 Agustus<small>}}
|}<section end=thirdroundmatch />
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