Molde FK – Hamilton Academical
Referee: Marian Barbu ROU (photo)
Assistant Referee 1: Marius Badea ROU
Assistant Referee 2: Adrian Vornicu ROU
Fourth Official: Marius Grotta NOR
Referee Observer: Thoroddur Hjaltalin ISL
AZ Alkmaar – Klaipedos FM
Referee: Mervan Bejtullahu KOS
Assistant Referee 1: Edmond Zeqiri KOS
Assistant Referee 2: Fatmir Sekiraqa KOS
Fourth Official: Martijn Vos NED
Referee Observer: Rudy Bossen NED
4 October 2023
Turan FK – Sheriff Tiraspol
Referee: Jeremy Muller LUX
Assistant Referee 1: Rafael Morim LUX
Assistant Referee 2: Kevin Stammet LUX
Fourth Official: Daniiar Sahi KAZ
Referee Observer: Pavel Sally KAZ
Lech Poznan – FC Nantes
Referee: Erkan Özdamar TUR
Assistant Referee 1: Murat Curbay TUR
Assistant Referee 2: Anıl Usta TUR
Fourth Official: Piotr Idzik POL
Referee Observer: Domagoj Vučkov CRO
Rukh Lviv – FK Sarajevo
Referee: Joonas Jaanovits EST
Assistant Referee 1: Aron Härsing EST
Assistant Referee 2: Thor Vaas EST
Fourth Official: Piotr Urban POL
Referee Observer: Tomasz Mikulski POL
GNK Dinamo – Rams Başakşehir
Referee: Jovan Kačevski MKD
Assistant Referee 1: Sladjan Markoski MKD
Assistant Referee 2: Branko Putilin MKD
Fourth Official: Toni Dadić CRO
Referee Observer: Sokol Jareci ALB
Qabala IK – Puskas Akademia
Referee: Saiat Qarabaev KAZ
Assistant Referee 1: Timur Tursymbaev KAZ
Assistant Referee 2: Evgenii Karlov KAZ
Fourth Official: Tural Qurbanov AZE
Referee Observer: Asim Khudiyev AZE
Pafos FC – MSK Žilina
Referee: Jan Petrík CZE
Assistant Referee 1: Jakub Hrabovsky CZE
Assistant Referee 2: Jan Hurych CZE
Referee Observer: Christos Nicolaides CYP
Sparta Praha – Maccabi Haifa
Referee: Martin Dohal SVK
Assistant Referee 1: Dušan Štofik SVK
Assistant Referee 2: Tobiaš Pacak SVK
Fourth Official: Jan Všetečka CZE
Referee Observer: Karel Vidlak CZE
Famalicao – Midtjylland
Referee: Jan Machalek CZE
Assistant Referee 1: Petr Caletka CZE
Assistant Referee 2: Marek Podany CZE
Fourth Official: Joao Afonso POR
Referee Observer: Joao Ferreira POR
Olympiakos SFP – US Lecce
Referee: Bolat Sariev KAZ
Assistant Referee 1: Evgenii Belskii KAZ
Assistant Referee 2: Denis Labaşov KAZ
Fourth Official: Georgios Balachoutis GRE
Referee Observer: Michalis Koukoulakis GRE
Dynamo Minsk – PFK Ludogorets
Referee: Antoine Chiaramonti AND
Assistant Referee 1: Andreu Simarro AND
Assistant Referee 2: Ainhoa Ruis AND
Fourth Official: Georgi Ginchev BUL
Referee Observer: Kostadin Gerginov BUL
Universitatea Craiova – FK Partizan
Referee: Ion Orlic MDA
Assistant Referee 1: Anatolie Basiul MDA
Assistant Referee 2: Ghenadi Lisița MDA
Fourth Official: Iulian Călin ROU
Referee Observer: Nicolae Grigorescu ROU
NK Maribor – FSV Mainz
Referee: Oliver Reitala FIN
Assistant Referee 1: Mika Lamppu FIN
Assistant Referee 2: Olli Jantunen FIN
Fourth Official: Alen Borošak SVN
Referee Observer: Leslie Irvine NIR
Malmö FF – HJK Helsinki
Referee: Robert Hennessy IRL
Assistant Referee 1: Emmett Dynan IRL
Assistant Referee 2: Darragh Keegan IRL
Fourth Official: Adi Aganovic SWE
Referee Observer: Helmut Fleischer GER
KAA Gent – FC Basel
Referee: Genc Nuza KOS
Assistant Referee 1: Drilon Rexhepi KOS
Assistant Referee 2: Altin Zhegrova KOS
Fourth Official: Matonga Simonini BEL
Referee Observer: Sven Bindels LUX
Referee: Marian Barbu ROU (photo)
Assistant Referee 1: Marius Badea ROU
Assistant Referee 2: Adrian Vornicu ROU
Fourth Official: Marius Grotta NOR
Referee Observer: Thoroddur Hjaltalin ISL
AZ Alkmaar – Klaipedos FM
Referee: Mervan Bejtullahu KOS
Assistant Referee 1: Edmond Zeqiri KOS
Assistant Referee 2: Fatmir Sekiraqa KOS
Fourth Official: Martijn Vos NED
Referee Observer: Rudy Bossen NED
4 October 2023
Turan FK – Sheriff Tiraspol
Referee: Jeremy Muller LUX
Assistant Referee 1: Rafael Morim LUX
Assistant Referee 2: Kevin Stammet LUX
Fourth Official: Daniiar Sahi KAZ
Referee Observer: Pavel Sally KAZ
Lech Poznan – FC Nantes
Referee: Erkan Özdamar TUR
Assistant Referee 1: Murat Curbay TUR
Assistant Referee 2: Anıl Usta TUR
Fourth Official: Piotr Idzik POL
Referee Observer: Domagoj Vučkov CRO
Rukh Lviv – FK Sarajevo
Referee: Joonas Jaanovits EST
Assistant Referee 1: Aron Härsing EST
Assistant Referee 2: Thor Vaas EST
Fourth Official: Piotr Urban POL
Referee Observer: Tomasz Mikulski POL
GNK Dinamo – Rams Başakşehir
Referee: Jovan Kačevski MKD
Assistant Referee 1: Sladjan Markoski MKD
Assistant Referee 2: Branko Putilin MKD
Fourth Official: Toni Dadić CRO
Referee Observer: Sokol Jareci ALB
Qabala IK – Puskas Akademia
Referee: Saiat Qarabaev KAZ
Assistant Referee 1: Timur Tursymbaev KAZ
Assistant Referee 2: Evgenii Karlov KAZ
Fourth Official: Tural Qurbanov AZE
Referee Observer: Asim Khudiyev AZE
Pafos FC – MSK Žilina
Referee: Jan Petrík CZE
Assistant Referee 1: Jakub Hrabovsky CZE
Assistant Referee 2: Jan Hurych CZE
Referee Observer: Christos Nicolaides CYP
Sparta Praha – Maccabi Haifa
Referee: Martin Dohal SVK
Assistant Referee 1: Dušan Štofik SVK
Assistant Referee 2: Tobiaš Pacak SVK
Fourth Official: Jan Všetečka CZE
Referee Observer: Karel Vidlak CZE
Famalicao – Midtjylland
Referee: Jan Machalek CZE
Assistant Referee 1: Petr Caletka CZE
Assistant Referee 2: Marek Podany CZE
Fourth Official: Joao Afonso POR
Referee Observer: Joao Ferreira POR
Olympiakos SFP – US Lecce
Referee: Bolat Sariev KAZ
Assistant Referee 1: Evgenii Belskii KAZ
Assistant Referee 2: Denis Labaşov KAZ
Fourth Official: Georgios Balachoutis GRE
Referee Observer: Michalis Koukoulakis GRE
Dynamo Minsk – PFK Ludogorets
Referee: Antoine Chiaramonti AND
Assistant Referee 1: Andreu Simarro AND
Assistant Referee 2: Ainhoa Ruis AND
Fourth Official: Georgi Ginchev BUL
Referee Observer: Kostadin Gerginov BUL
Universitatea Craiova – FK Partizan
Referee: Ion Orlic MDA
Assistant Referee 1: Anatolie Basiul MDA
Assistant Referee 2: Ghenadi Lisița MDA
Fourth Official: Iulian Călin ROU
Referee Observer: Nicolae Grigorescu ROU
NK Maribor – FSV Mainz
Referee: Oliver Reitala FIN
Assistant Referee 1: Mika Lamppu FIN
Assistant Referee 2: Olli Jantunen FIN
Fourth Official: Alen Borošak SVN
Referee Observer: Leslie Irvine NIR
Malmö FF – HJK Helsinki
Referee: Robert Hennessy IRL
Assistant Referee 1: Emmett Dynan IRL
Assistant Referee 2: Darragh Keegan IRL
Fourth Official: Adi Aganovic SWE
Referee Observer: Helmut Fleischer GER
KAA Gent – FC Basel
Referee: Genc Nuza KOS
Assistant Referee 1: Drilon Rexhepi KOS
Assistant Referee 2: Altin Zhegrova KOS
Fourth Official: Matonga Simonini BEL
Referee Observer: Sven Bindels LUX