Union Berlin – SC Braga
Referee: Srdjan Jovanović (SRB, photo)
Assistant Referee 1: Uroš Stojković (SRB)
Assistant Referee 2: Milan Mihajlović (SRB)
Fourth Official: Novak Simović (SRB)
VAR: Ivan Bebek (CRO)
AVAR: Stuart Attwell (ENG)
Referee Observer: David Fernandez Borbalan (ESP)
RB Salzburg – Real Sociedad
Referee: Bartosz Frankowski (POL)
Assistant Referee 1: Marcin Boniek (POL)
Assistant Referee 2: Jakub Winkler (POL)
Fourth Official: Patryk Gryckiewicz (POL)
VAR: Tomasz Kwiatkowski (POL)
AVAR: Piotr Lasyk (POL)
Referee Observer: Fredy Fautrel (FRA)
Manchester United – Galatasaray SK
Referee: Ivan Kružliak (SVK)
Assistant Referee 1: Branislav Hancko (SVK)
Assistant Referee 2: Jan Pozor (SVK)
Fourth Official: Peter Kralović (SVK)
VAR: Bastian Dankert (GER)
AVAR: Bram Van Driessche (BEL)
Referee Observer: Martin Hansson (SWE)
FC Copenhagen – Bayern München
Referee: Orel Grinfeeld (ISR)
Assistant Referee 1: Roy Hassan (ISR)
Assistant Referee 2: Idan Yarkoni (ISR)
Fourth Official: Gal Leibovitz (ISR)
VAR: Roi Reinshreiber (ISR)
AVAR: Ziv Adler (ISR)
Referee Observer: Stefano Podeschi (SMR)
RC Lens – Arsenal FC
Referee: Marco Guida (ITA)
Assistant Referee 1: Filippo Meli (ITA)
Assistant Referee 2: Giorgio Peretti (ITA)
Fourth Official: Matteo Marchetti (ITA)
VAR: Paolo Valeri (ITA)
AVAR: Michael Fabbri (ITA)
Referee Observer: Vladimir Antonov (MDA)
PSV Eindhoven – Sevilla FC
Referee: Daniele Orsato (ITA)
Assistant Referee 1: Ciro Carbone (ITA)
Assistant Referee 2: Alessandro Giallatini (ITA)
Fourth Official: Antonio Rapuano (ITA)
VAR: Massimiliano Irrati (ITA)
AVAR: Tiago Martins (POR)
Referee Observer: Alan Sant (MLT)
SSC Napoli – Real Madrid
Referee: Clement Turpin (FRA)
Assistant Referee 1: Nicolas Danos (FRA)
Assistant Referee 2: Alexis Auger (FRA)
Fourth Official: Stephanie Frappart (FRA)
VAR: Jerôme Brisard (FRA)
AVAR: Benoît Millot (FRA)
Referee Observer: Emil Bozinovski (MKD)
Inter Milano – SL Benfica
Referee: Danny Makkelie (NED)
Assistant Referee 1: Hessel Steegstra (NED)
Assistant Referee 2: Jan de Vries (NED)
Fourth Official: Allard Lindhout (NED)
VAR: Rob Dieperink (NED)
AVAR: Nejc Kajtazović (SVN)
Referee Observer: Stefan Messner (AUT)
4 October 2023
Atletico de Madrid – Feyenoord
Referee: François Letexier (FRA)
Assistant Referee 1: Cyril Mugnier (FRA)
Assistant Referee 2: Mehdi Rahmouni (FRA)
Fourth Official: Jeremy Stinat (FRA)
VAR: Massimiliano Irrati (ITA)
AVAR: Jerôme Brisard (FRA)
Referee Observer: Hebert Fandel (GER)
Royal Antwerp – Shakhtar Donetsk
Referee: Rade Obrenovič (SVN)
Assistant Referee 1: Jure Praprotnik (SVN)
Assistant Referee 2: Grega Kordež (SVN)
Fourth Official: Slavko Vinčić (SVN)
VAR: Nejc Kajtazović (SVN)
AVAR: Ivan Bebek (CRO)
Referee Observer: Milorad Mažić (SRB)
Celtic – Lazio
Referee: Donatas Rumšas (LTU)
Assistant Referee 1: Aleksandr Radius (LTU)
Assistant Referee 2: Dovydas Sužiedėlis (LTU)
Fourth Official: Robertas Valikonis (LTU)
VAR: Juan Martinez Munuera (ESP)
AVAR: Roi Reinshreiber (ISR)
Referee Observer: Peter Sippel (GER)
Borussia Dortmund – AC Milan
Referee: Szymon Marciniak (POL)
Assistant Referee 1: Pawel Sokolnicki (POL)
Assistant Referee 2: Tomasz Listkiewicz (POL)
Fourth Official: Tomasz Musial (POL)
VAR: Tomasz Kwiatkowski (POL)
AVAR: Piotr Lasyk (POL)
Referee Observer: Terje Hauge (NOR)
Newcastle FC – Paris St. Germain
Referee: Istvan Kovacs (ROU)
Assistant Referee 1: Vasile Marinescu (ROU)
Assistant Referee 2: Ovidiu Artene (ROU)
Fourth Official: Marcel Birsan (ROU)
VAR: Marco Fritz (GER)
AVAR: Rob Dieperink (NED)
Referee Observer: Itchko Lozev (BUL)
RB Leipzig – Manchester City
Referee: Artur Dias (POR)
Assistant Referee 1: Paulo Soares (POR)
Assistant Referee 2: Pedro Ribeiro (POR)
Fourth Official: Fabio Melo (POR)
VAR: Tiago Martins (POR)
AVAR: Clay Ruperti (NED)
Referee Observer: Markus Strömbergsson (SWE)
Crvena Zvezda – Young Boys
Referee: William Collum (SCO)
Assistant Referee 1: Francis Connor (SCO)
Assistant Referee 2: David McGeachie (SCO)
Fourth Official: David Dickinson (SCO)
VAR: David Coote (ENG)
AVAR: Andrew Dallas (SCO)
Referee Observer: Karen Nalbandyan (ARM)
Referee: Srdjan Jovanović (SRB, photo)
Assistant Referee 1: Uroš Stojković (SRB)
Assistant Referee 2: Milan Mihajlović (SRB)
Fourth Official: Novak Simović (SRB)
VAR: Ivan Bebek (CRO)
AVAR: Stuart Attwell (ENG)
Referee Observer: David Fernandez Borbalan (ESP)
RB Salzburg – Real Sociedad
Referee: Bartosz Frankowski (POL)
Assistant Referee 1: Marcin Boniek (POL)
Assistant Referee 2: Jakub Winkler (POL)
Fourth Official: Patryk Gryckiewicz (POL)
VAR: Tomasz Kwiatkowski (POL)
AVAR: Piotr Lasyk (POL)
Referee Observer: Fredy Fautrel (FRA)
Manchester United – Galatasaray SK
Referee: Ivan Kružliak (SVK)
Assistant Referee 1: Branislav Hancko (SVK)
Assistant Referee 2: Jan Pozor (SVK)
Fourth Official: Peter Kralović (SVK)
VAR: Bastian Dankert (GER)
AVAR: Bram Van Driessche (BEL)
Referee Observer: Martin Hansson (SWE)
FC Copenhagen – Bayern München
Referee: Orel Grinfeeld (ISR)
Assistant Referee 1: Roy Hassan (ISR)
Assistant Referee 2: Idan Yarkoni (ISR)
Fourth Official: Gal Leibovitz (ISR)
VAR: Roi Reinshreiber (ISR)
AVAR: Ziv Adler (ISR)
Referee Observer: Stefano Podeschi (SMR)
RC Lens – Arsenal FC
Referee: Marco Guida (ITA)
Assistant Referee 1: Filippo Meli (ITA)
Assistant Referee 2: Giorgio Peretti (ITA)
Fourth Official: Matteo Marchetti (ITA)
VAR: Paolo Valeri (ITA)
AVAR: Michael Fabbri (ITA)
Referee Observer: Vladimir Antonov (MDA)
PSV Eindhoven – Sevilla FC
Referee: Daniele Orsato (ITA)
Assistant Referee 1: Ciro Carbone (ITA)
Assistant Referee 2: Alessandro Giallatini (ITA)
Fourth Official: Antonio Rapuano (ITA)
VAR: Massimiliano Irrati (ITA)
AVAR: Tiago Martins (POR)
Referee Observer: Alan Sant (MLT)
SSC Napoli – Real Madrid
Referee: Clement Turpin (FRA)
Assistant Referee 1: Nicolas Danos (FRA)
Assistant Referee 2: Alexis Auger (FRA)
Fourth Official: Stephanie Frappart (FRA)
VAR: Jerôme Brisard (FRA)
AVAR: Benoît Millot (FRA)
Referee Observer: Emil Bozinovski (MKD)
Inter Milano – SL Benfica
Referee: Danny Makkelie (NED)
Assistant Referee 1: Hessel Steegstra (NED)
Assistant Referee 2: Jan de Vries (NED)
Fourth Official: Allard Lindhout (NED)
VAR: Rob Dieperink (NED)
AVAR: Nejc Kajtazović (SVN)
Referee Observer: Stefan Messner (AUT)
4 October 2023
Atletico de Madrid – Feyenoord
Referee: François Letexier (FRA)
Assistant Referee 1: Cyril Mugnier (FRA)
Assistant Referee 2: Mehdi Rahmouni (FRA)
Fourth Official: Jeremy Stinat (FRA)
VAR: Massimiliano Irrati (ITA)
AVAR: Jerôme Brisard (FRA)
Referee Observer: Hebert Fandel (GER)
Royal Antwerp – Shakhtar Donetsk
Referee: Rade Obrenovič (SVN)
Assistant Referee 1: Jure Praprotnik (SVN)
Assistant Referee 2: Grega Kordež (SVN)
Fourth Official: Slavko Vinčić (SVN)
VAR: Nejc Kajtazović (SVN)
AVAR: Ivan Bebek (CRO)
Referee Observer: Milorad Mažić (SRB)
Celtic – Lazio
Referee: Donatas Rumšas (LTU)
Assistant Referee 1: Aleksandr Radius (LTU)
Assistant Referee 2: Dovydas Sužiedėlis (LTU)
Fourth Official: Robertas Valikonis (LTU)
VAR: Juan Martinez Munuera (ESP)
AVAR: Roi Reinshreiber (ISR)
Referee Observer: Peter Sippel (GER)
Borussia Dortmund – AC Milan
Referee: Szymon Marciniak (POL)
Assistant Referee 1: Pawel Sokolnicki (POL)
Assistant Referee 2: Tomasz Listkiewicz (POL)
Fourth Official: Tomasz Musial (POL)
VAR: Tomasz Kwiatkowski (POL)
AVAR: Piotr Lasyk (POL)
Referee Observer: Terje Hauge (NOR)
Newcastle FC – Paris St. Germain
Referee: Istvan Kovacs (ROU)
Assistant Referee 1: Vasile Marinescu (ROU)
Assistant Referee 2: Ovidiu Artene (ROU)
Fourth Official: Marcel Birsan (ROU)
VAR: Marco Fritz (GER)
AVAR: Rob Dieperink (NED)
Referee Observer: Itchko Lozev (BUL)
RB Leipzig – Manchester City
Referee: Artur Dias (POR)
Assistant Referee 1: Paulo Soares (POR)
Assistant Referee 2: Pedro Ribeiro (POR)
Fourth Official: Fabio Melo (POR)
VAR: Tiago Martins (POR)
AVAR: Clay Ruperti (NED)
Referee Observer: Markus Strömbergsson (SWE)
Crvena Zvezda – Young Boys
Referee: William Collum (SCO)
Assistant Referee 1: Francis Connor (SCO)
Assistant Referee 2: David McGeachie (SCO)
Fourth Official: David Dickinson (SCO)
VAR: David Coote (ENG)
AVAR: Andrew Dallas (SCO)
Referee Observer: Karen Nalbandyan (ARM)
FC Porto – FC Barcelona
Referee: Anthony Taylor (ENG)
Assistant Referee 1: Gary Beswick (ENG)
Assistant Referee 2: Adam Nunn (ENG)
Fourth Official: Robert Jones (ENG)
VAR: Stuart Attwell (ENG)
AVAR: Bastian Dankert (GER)
Referee Observer: Alfredo Trentalange (ITA)
Referee: Anthony Taylor (ENG)
Assistant Referee 1: Gary Beswick (ENG)
Assistant Referee 2: Adam Nunn (ENG)
Fourth Official: Robert Jones (ENG)
VAR: Stuart Attwell (ENG)
AVAR: Bastian Dankert (GER)
Referee Observer: Alfredo Trentalange (ITA)