| 27 Jun 19 | Playoff        | Barry Town UnitedBarry Town Un | 0 - 0 | Cliftonville Cliftonville |
| 04 Jul 19 | Playoff        | Cliftonville Cliftonville | 0 - 0 | Barry Town UnitedBarry Town Un |
| |
| 11 Jul 19 | r01        | Ordabasy ShymkentOrdabasy Shym | 1 - 0 | Torpedo Kutaisi Torpedo Kutai |
| 11 Jul 19 | r01        | Trans Narva Trans Narva | 0 - 2 | Buducnost Podgorica Buducnost Pod |
| 11 Jul 19 | r01        | LaciLaci | 1 - 1 | Hapoel Beer ShevaHapoel Beer S |
| 11 Jul 19 | r01        | MoldeMolde | 7 - 1 | KR ReykjavikKR Reykjavik |
| 11 Jul 19 | r01        | Crusaders Crusaders | 2 - 0 | B36 TorshavnB36 Torshavn |
| 11 Jul 19 | r01        | DebrecenDebrecen | 3 - 0 | KukesiKukesi |
| 11 Jul 19 | r01        | Maccabi HaifaMaccabi Haifa | 2 - 0 | MuraMura |
| 11 Jul 19 | r01        | BrannBrann | 2 - 2 | Shamrock Shamrock |
| 11 Jul 19 | r01        | FolaFola | 1 - 2 | ChikhuraChikhura |
| 11 Jul 19 | r01        | Connah's Quay NomadsConnah's Quay | 1 - 2 | KilmarnockKilmarnock |
| 11 Jul 19 | r01        | ZetaZeta | 1 - 5 | Videoton FC FehervarVideoton FC F |
| 11 Jul 19 | r01        | Steaua BucurestiSteaua Bucure | 2 - 0 | FC Milsami FC Milsami |
| 11 Jul 19 | r01        | FK VentspilsFK Ventspils | 3 - 0 | KS Teuta KS Teuta |
| 11 Jul 19 | r01        | Brøndby Brøndby | 4 - 1 | Inter TurkuInter Turku |
| 11 Jul 19 | r01        | VMFD Zalgiris VMFD Zalgiris | 1 - 3 | Kispest HonvedKispest Honve |
| 11 Jul 19 | r01        | Kispest HonvedKispest Honve | 3 - 1 | VMFD Zalgiris VMFD Zalgiris |
| 16 Jul 19 | r01        | Mladost PodgoricaMladost Podgo | 0 - 0 | CSKA SofiaCSKA Sofia |
| 17 Jul 19 | r01        | ChikhuraChikhura | 2 - 1 | FolaFola |
| |
| 23 Jul 19 | r02        | Santa Coloma Santa Coloma | 0 - 0 | FC AstanaFC Astana |
| 25 Jul 19 | r02        | Lechia GdańskLechia Gdańsk | 2 - 1 | Brøndby Brøndby |
| 25 Jul 19 | r02        | EspanolEspanol | 4 - 0 | StjarnanStjarnan |
| 01 Aug 19 | r02        | KuPS KuopioKuPS Kuopio | 0 - 0 | Legia WarsawLegia Warsaw |
| 01 Aug 19 | r02        | HackenHacken | 0 - 3 | AZ AlkmaarAZ Alkmaar |
| 01 Aug 19 | r02        | Maccabi HaifaMaccabi Haifa | 2 - 1 | StrasbourgStrasbourg |
| 01 Aug 19 | r02        | Malmo FFMalmo FF | 3 - 2 | DomzaleDomzale |
| 01 Aug 19 | r02        | Crusaders Crusaders | 1 - 2 | WolvesWolves |
| 01 Aug 19 | r02        | Partizan BelgradePartizan Belg | 3 - 0 | Connah's Quay NomadsConnah's Quay |
| |
| 06 Aug 19 | r03        | SutjeskaSutjeska | 1 - 2 | Linfield Linfield |
| 07 Aug 19 | r03        | Slovan Bratislava Slovan Bratis | 1 - 0 | DundalkDundalk |
| 08 Aug 19 | r03        | FC AstanaFC Astana | 5 - 1 | Valletta Valletta |
| 08 Aug 19 | r03        | AEK LarnacaAEK Larnaca | 1 - 1 | GentGent |
| 08 Aug 19 | r03        | Pyunik Pyunik | 0 - 4 | WolvesWolves |
| 08 Aug 19 | r03        | Sparta PragueSparta Prague | 2 - 2 | TrabzonsporTrabzonspor |
| 08 Aug 19 | r03        | Brøndby Brøndby | 2 - 4 | BragaBraga |
| 08 Aug 19 | r03        | FK VentspilsFK Ventspils | 0 - 3 | GuimaraesGuimaraes |
| 08 Aug 19 | r03        | Sheriff TiraspolSheriff Tiras | 1 - 2 | AIKAIK |
| 08 Aug 19 | r03        | FK HaugesundFK Haugesund | 0 - 1 | PSV EindhovenPSV Eindhoven |
| 08 Aug 19 | r03        | MoldeMolde | 3 - 0 | ArisAris |
| 08 Aug 19 | r03        | ThunThun | 2 - 3 | Spartak MoscowSpartak Mosco |
| 08 Aug 19 | r03        | FeyenoordFeyenoord | 4 - 0 | Dinamo TbilisiDinamo Tbilis |
| 13 Aug 19 | r03        | Nomme KaljuNomme Kalju | 0 - 1 | F91 DudelangeF91 Dudelange |
| 13 Aug 19 | r03        | Linfield Linfield | 3 - 2 | SutjeskaSutjeska |
| 13 Aug 19 | r03        | DundalkDundalk | 1 - 3 | Slovan Bratislava Slovan Bratis |
| 14 Aug 19 | r03        | GuimaraesGuimaraes | 6 - 0 | FK VentspilsFK Ventspils |
| 14 Aug 19 | r03        | AtromitosAtromitos | 0 - 2 | Legia WarsawLegia Warsaw |
| 15 Aug 19 | r03        | Dinamo TbilisiDinamo Tbilis | 1 - 1 | FeyenoordFeyenoord |
| 15 Aug 19 | r03        | Spartak MoscowSpartak Mosco | 2 - 1 | ThunThun |
| 15 Aug 19 | r03        | FK Suduva FK Suduva | 2 - 1 | Maccabi Tel AvivMaccabi Tel A |
| 15 Aug 19 | r03        | BATE BorisovBATE Borisov | 0 - 0 | FK SarajevoFK Sarajevo |
| 15 Aug 19 | r03        | AIKAIK | 1 - 1 | Sheriff TiraspolSheriff Tiras |
| 15 Aug 19 | r03        | Shakhter Soligorsk Shakhter Soli | 1 - 1 | TorinoTorino |
| 15 Aug 19 | r03        | Apollon LimassolApollon Limas | 3 - 1 | Austria ViennaAustria Vienn |
| 15 Aug 19 | r03        | Mlada BoleslavMlada Bolesla | 0 - 1 | Steaua BucurestiSteaua Bucure |
| 15 Aug 19 | r03        | MalatyasporMalatyaspor | 1 - 0 | Partizan BelgradePartizan Belg |
| 15 Aug 19 | r03        | WolvesWolves | 4 - 0 | Pyunik Pyunik |
| |
| 22 Aug 19 | r04        | FC AstanaFC Astana | 3 - 0 | BATE BorisovBATE Borisov |
| 22 Aug 19 | r04        | Malmo FFMalmo FF | 3 - 0 | Bnei YehudaBnei Yehuda |
| 22 Aug 19 | r04        | Ludogorets Razgrad Ludogorets Ra | 0 - 0 | NK MariborNK Maribor |
| 22 Aug 19 | r04        | FeyenoordFeyenoord | 3 - 0 | Hapoel Beer ShevaHapoel Beer S |
| 22 Aug 19 | r04        | Legia WarsawLegia Warsaw | 0 - 0 | RangersRangers |
| 22 Aug 19 | r04        | AEKAEK | 1 - 3 | TrabzonsporTrabzonspor |
| 22 Aug 19 | r04        | PSV EindhovenPSV Eindhoven | 3 - 0 | Apollon LimassolApollon Limas |
| 22 Aug 19 | r04        | StrasbourgStrasbourg | 1 - 0 | Ein FrankfurtEin Frankfurt |
| 22 Aug 19 | r04        | Steaua BucurestiSteaua Bucure | 0 - 0 | GuimaraesGuimaraes |
| 22 Aug 19 | r04        | AZ AlkmaarAZ Alkmaar | 1 - 1 | AntwerpAntwerp |
| 22 Aug 19 | r04        | BragaBraga | 1 - 0 | Spartak MoscowSpartak Mosco |
| 22 Aug 19 | r04        | CelticCeltic | 2 - 0 | AIKAIK |
| 22 Aug 19 | r04        | Linfield Linfield | 3 - 2 | Qarabag FKQarabag FK |
| 22 Aug 19 | r04        | TorinoTorino | 2 - 3 | WolvesWolves |
| 22 Aug 19 | r04        | Partizan BelgradePartizan Belg | 2 - 1 | MoldeMolde |
| 22 Aug 19 | r04        | EspanolEspanol | 3 - 1 | ZoryaZorya |
| 22 Aug 19 | r04        | Slovan Bratislava Slovan Bratis | 1 - 0 | PAOKPAOK |
| |
| 29 Aug 19 | r05        | Qarabag FKQarabag FK | 2 - 1 | Linfield Linfield |
| 29 Aug 19 | r05        | AIKAIK | 1 - 4 | CelticCeltic |
| 29 Aug 19 | r05        | PAOKPAOK | 3 - 2 | Slovan Bratislava Slovan Bratis |
| 29 Aug 19 | r05        | Bnei YehudaBnei Yehuda | 0 - 1 | Malmo FFMalmo FF |
| 29 Aug 19 | r05        | Apollon LimassolApollon Limas | 0 - 4 | PSV EindhovenPSV Eindhoven |
| 29 Aug 19 | r05        | BATE BorisovBATE Borisov | 2 - 0 | FC AstanaFC Astana |
| 29 Aug 19 | r05        | ZoryaZorya | 2 - 2 | EspanolEspanol |
| 29 Aug 19 | r05        | MoldeMolde | 1 - 1 | Partizan BelgradePartizan Belg |
| 29 Aug 19 | r05        | Spartak MoscowSpartak Mosco | 1 - 2 | BragaBraga |
| 29 Aug 19 | r05        | Hapoel Beer ShevaHapoel Beer S | 0 - 3 | FeyenoordFeyenoord |
| 29 Aug 19 | r05        | TrabzonsporTrabzonspor | 0 - 2 | AEKAEK |
| 29 Aug 19 | r05        | AntwerpAntwerp | 1 - 4 | AZ AlkmaarAZ Alkmaar |
| 29 Aug 19 | r05        | FerencvarosFerencvaros | 4 - 2 | FK Suduva FK Suduva |
| 29 Aug 19 | r05        | RijekaRijeka | 1 - 1 | GentGent |
| 29 Aug 19 | r05        | NK MariborNK Maribor | 2 - 2 | Ludogorets Razgrad Ludogorets Ra |
| 29 Aug 19 | r05        | Ein FrankfurtEin Frankfurt | 3 - 0 | StrasbourgStrasbourg |
| 29 Aug 19 | r05        | RangersRangers | 1 - 0 | Legia WarsawLegia Warsaw |
| 29 Aug 19 | r05        | WolvesWolves | 2 - 1 | TorinoTorino |
| 29 Aug 19 | r05        | GuimaraesGuimaraes | 1 - 0 | Steaua BucurestiSteaua Bucure |
| |
| 19 Sep 19 | r06        | Apoel NicosiaApoel Nicosia | 3 - 4 | F91 DudelangeF91 Dudelange |
| 19 Sep 19 | r06        | Qarabag FKQarabag FK | 0 - 3 | SevillaSevilla |
| 19 Sep 19 | r06        | FC CopenhagenFC Copenhagen | 1 - 0 | LuganoLugano |
| 19 Sep 19 | r06        | Dynamo KievDynamo Kiev | 1 - 0 | Malmo FFMalmo FF |
| 19 Sep 19 | r06        | FC BaselFC Basel | 5 - 0 | FC KrasnodarFC Krasnodar |
| 19 Sep 19 | r06        | GetafeGetafe | 1 - 0 | TrabzonsporTrabzonspor |
| 19 Sep 19 | r06        | PSV EindhovenPSV Eindhoven | 3 - 2 | Sporting CPSporting CP |