Referee: Nikola Dabanović (MNE, photo)
Assistant Referee 1: Milovan Djukić (MNE)
Assistant Referee 2: Vladan Todorović (MNE)
Fourth Official: Miloš Bošković (MNE)
VAR: Srdjan Jovanović (SRB)
AVAR: Dalibor Djurdjević (SRB)
Referee Observer: Pavel Saliy (KAZ)
Galatasaray – Lazio
Referee: Matej Jug (SVN)
Assistant Referee 1: Matej Žunić (SVN)
Assistant Referee 2: Manuel Vidali (SVN)
Fourth Official: David Šmajc (SVN)
VAR: Slavko Vinčić (SVN)
AVAR: Rade Obrenović (SVN)
Referee Observer: Rune Pedersen (NOR)
Lokomotiv Moskva – Olympique de Marseille
Referee: Irfan Peljto (BIH)
Assistant Referee 1: Davor Beljo (BIH)
Assistant Referee 2: Damir Lazić (BIH)
Fourth Official: Miloš Gigović (BIH)
VAR: Felix Zwayer (GER)
AVAR: Marco Achmüller (GER)
Referee Observer: Vladimir Antonov (MDA)
Crvena Zvezda – SC Braga
Referee: John Beaton (SCO)
Assistant Referee 1: Daniel McFarlane (SCO)
Assistant Referee 2: Douglas Potter (SCO)
Fourth Official: David Alexander Munro (SCO)
VAR: Andrew Madley (ENG)
AVAR: Peter Bankes (ENG)
Referee Observer: Karen Nalbandyan (ARM)
FC Midtjylland – PFC Ludogorets
Referee: Aliyar Aghayev (AZE)
Assistant Referee 1: Zeynal Zeynalov (AZE)
Assistant Referee 2: Akif Amirali (AZE)
Fourth Official: Elchin Masiyev (AZE)
VAR: Vitaliy Meshkov (RUS)
AVAR: Sergei Ivanov (RUS)
Referee Observer: Drago Kos (SVN)
Real Betis – Celtic
Referee: Fran Jović (CRO)
Assistant Referee 1: Hrvoje Radić (CRO)
Assistant Referee 2: Luka Pušić (CRO)
Fourth Official: Mario Zebec (CRO)
VAR: Bastian Dankert (GER)
AVAR: Stephanie Frappart (FRA)
Referee Observer: Nikolai Levnikov (RUS)
Bayer Leverkusen – Ferencvarosi TC
Referee: Andris Treimanis (LVA)
Assistant Referee 1: Haralds Gudermanis (LVA)
Assistant Referee 2: Aleksejs Spasjonnikovs (LVA)
Fourth Official: Aleksandrs Golubevs (LVA)
VAR: Pol van Boekel (NED)
AVAR: Jerôme Brisard (FRA)
Referee Observer: Sokol Jareci (ALB)
Rapid Wien – KRC Genk
Referee: Kristo Tohver (EST)
Assistant Referee 1: Silver Koiv (EST)
Assistant Referee 2: Sten Klaasen (EST)
Fourth Official: Juri Frischer (EST)
VAR: Sascha Stegemann (GER)
AVAR: Mark Borsch (GER)
Referee Observer: Georgios Bikas (GRE)
GNK Dinamo – West Ham United
Referee: Ruddy Buquet (FRA)
Assistant Referee 1: Guillaume Debart (FRA)
Assistant Referee 2: Benjamin Pages (FRA)
Fourth Official: Amaury Delerue (FRA)
VAR: Benoît Millot (FRA)
AVAR: Mikael Berchebru (FRA)
Referee Observer: Fritz Stuchlik (AUT)
Brondby IF – Sparta Praha
Referee: Aleksandar Stavrev (MKD)
Assistant Referee 1: Dejan Kostadinov (MKD)
Assistant Referee 2: Kushtrim Lika (MKD)
Fourth Official: Igor Stojchevski (MKD)
VAR: Pawel Raczkowski (POL)
AVAR: Marcin Borkowski (POL)
Referee Observer: Thoroddur Hjaltalín ISL)
Rangers FC – Olympique Lyonnais
Referee: Andreas Ekberg (SWE)
Assistant Referee 1: Mehmet Culum (SWE)
Assistant Referee 2: Stefan Hallberg (SWE)
Fourth Official: Kristoffer Karlsson (SWE)
VAR: Marco Fritz (GER)
AVAR: Harm Osmers (GER)
Referee Observer: Antonio Damato (ITA)
AS Monaco – Sturm Graz
Referee: Donatas Rumsas (LTU)
Assistant Referee 1: Aleksandr Radius (LTU)
Assistant Referee 2: Dovydas Sužiedėlis (LTU)
Fourth Official: Manfredas Lukjančukas (LTU)
VAR: Kevin Blom (NED)
AVAR: Clay Ruperti (NED)
Referee Observer: Roberto Rosetti (ITA)
PSV Eindhoven – Real Sociedad
Referee: William Collum (SCO)
Assistant Referee 1: Francis Connor (SCO)
Assistant Referee 2: David McGeachie (SCO)
Fourth Official: Nicolas Walsh (SCO)
VAR: Paul Tierney (ENG)
AVAR: Willy Delajod (FRA)
Referee Observer: Goran Mihaljević (MNE)
Leicester City – SSC Napoli
Referee: Tiago Martins (POR)
Assistant Referee 1: Luis Campos (POR)
Assistant Referee 2: Bruno Jesus (POR)
Fourth Official: Vitor Ferreira (POR)
VAR: Alejandro Hernandez Hernandez (ESP)
AVAR: Guillermo Cuadra Fernandez (ESP)
Referee Observer: Costas Kapitanis (CYP)
Eintracht Frankfurt – Fenerbahçe SK
Referee: Maurizio Mariani (ITA)
Assistant Referee 1: Matteo Passeri (ITA)
Assistant Referee 2: Alessandro Costanzo (ITA)
Fourth Official: Daniele Chiffi (ITA)
VAR: Massimiliano Irrati (ITA)
AVAR: Marco Di Bello (ITA)
Referee Observer: Lucilio Batista (POR)
Olympiacos FC – Royal Antwerp
Referee: Tamas Bognar (HUN)
Assistant Referee 1: Balazs Buzas (HUN)
Assistant Referee 2: Peter Kobor (HUN)
Fourth Official: Balazs Berke (HUN)
VAR: Marco Guida (ITA)
AVAR: Filippo Meli (ITA)
Referee Observer: Jouni Hyytia (FIN)
