FC Urartu – HSK Zrinjski
Referee: Philip Farrugia (MLT, photo)
Assistant Referee 1: Alan Camilleri (MLT)
Assistant Referee 2: Luke Portelli (MLT)
Fourth Official: Alex Johnson (MLT)
VAR: Daniele Chiffi (ITA)
AVAR: Valerio Marini (ITA)
Referee Observer: Augustus Constantin (ROU)
Lincoln Red Imps – Qarabag FK
Referee: Vitalijs Spasjonņikovs (LVA)
Assistant Referee 1: Raimonds Tatriks (LVA)
Assistant Referee 2: Artūrs Šakurovs (LVA)
Fourth Official: Aleksandrs Anufrijevs (LVA)
VAR: Andris Treimanis (LVA)
AVAR: Kristaps Ratnieks (LVA)
Referee Observer: Bernardino Gonzalez Vazquez (ESP)
Zalgiris Vilnius – Struga Trim Lum
Referee: Elçin Masiyev (AZE)
Assistant Referee 1: Elşad Abdullayev (AZE)
Assistant Referee 2: Parvin Talibov (AZE)
Fourth Official: Kamal Umudlu (AZE)
VAR: Mete Kalkavan (TUR)
AVAR: Koray Gencerler (TUR)
Referee Observer: Haim Yakov (ISR)
Olimpija Ljubljana – Valmiera FC
Referee: Andrei Chivulete (ROU)
Assistant Referee 1: Sebastian Gheorghe (ROU)
Assistant Referee 2: Andrei Constantinescu (ROU)
Fourth Official: Sebastian Coltescu (ROU)
VAR: Luis Godinho (POR)
AVAR: Andre Narciso (POR)
Referee Observer: Pascal Garibian (FRA)
Rakow Czestochowa – Flora Tallinn
Referee: Arda Kardesler (TUR)
Assistant Referee 1: Ali Ögel (TUR)
Assistant Referee 2: Mehmet Tugral (TUR)
Fourth Official: Ümit Öztürk (TUR)
VAR: Alper Ulusoy (TUR)
AVAR: Hakan Ceylan (TUR)
Referee Observer: Manuel Díaz Vega (ESP)
Hamrun Spartans – Maccabi Haifa
Referee: Donald Robertson (SCO)
Assistant Referee 1: Graeme Stewart (SCO)
Assistant Referee 2: Ross Macleod (SCO)
Fourth Official: Kevin Clancy (SCO)
VAR: Nicolas Walsh (SCO)
AVAR: Daniel McFarlane (SCO)
Referee Observer: Joao Ferreira (POR)
FC Balkani – PFK Ludogorets
Referee: Gal Leibovitz (ISR)
Assistant Referee 1: Omer Barbiro (ISR)
Assistant Referee 2: Matityahu Yakobov (ISR)
Fourth Official: Idan Leiba (ISR)
VAR: Daniel Bar Natan (ISR)
AVAR: Eitan Shmuelevitz (ISR)
Referee Observer: Elmir Pilav (BIH)
KI Klaksvik – Ferencvarosi TC
Referee: Juri Frischer (EST)
Assistant Referee 1: Veiko Motsnik (EST)
Assistant Referee 2: Sander Saga (EST)
Fourth Official: Kristo Külljastinen (EST)
VAR: Clay Ruperti (NED)
AVAR: Dennis Higler (NED)
Referee Observer: David Malcolm (NIR)
FK Partizani – Bate Borisov
Referee: Nathan Verboomen (BEL)
Assistant Referee 1: Mathias Hillaert (BEL)
Assistant Referee 2: Ruben Wyns (BEL)
Fourth Official: Wesli De Cremer (BEL)
VAR: Jan Boterberg (BEL)
AVAR: Thibaud Nijssen (BEL)
Referee Observer: Ante Vučemilović-Šimunović (CRO)
Shamrock Rovers – Breidablik
Referee: Chrysovalanti Theouli (CYP)
Assistant Referee 1: Michail Sotiriou (CYP)
Assistant Referee 2: Pavlos Georgíou (CYP)
Fourth Official: Konstantinos Fellas (CYP)
VAR: Dimitrios Solomou (CYP)
AVAR: Marios Christoforou (CYP)
Referee Observer: Fredy Fautrel (FRA)
Astana FK – Dinamo Tbilisi
Referee: Christian Ciochirca (AUT)
Assistant Referee 1: Maximilian Weiss (AUT)
Assistant Referee 2: Michael Obritzberger (AUT)
Fourth Official: Harald Lechner (AUT)
VAR: Alan Kijas (AUT)
AVAR: Andreas Heiss (AUT)
Referee Observer: Cüneyt Cakir (TUR)
HJK Helsinki – Larne FC
Referee: Goga Kikacheishvili (GEO)
Assistant Referee 1: Giorgi Elikashvili (GEO)
Assistant Referee 2: Davit Chigogidze (GEO)
Fourth Official: Irakli Kvirikashvili (GEO)
VAR: Sören Storks (GER)
AVAR: Pascal Müller (GER)
Referee Observer: Stefan Messner (AUT)
BK Häcken – The New Saints
Referee: Henrik Nalbandyan (ARM)
Assistant Referee 1: Mesrop Ghazaryan (ARM)
Assistant Referee 2: Khachatur Hovhannisyan (ARM)
Fourth Official: Ashot Ghaltakhchyan (ARM)
VAR: Luca Pairetto (ITA)
AVAR Federico Dionisi (ITA)
Referee Observer: Viktor Kassai (HUN)
FC Viitorul – Sheriff Tiraspol
Referee: Sander van der Eijk (NED)
Assistant Referee 1: Joost van Zuilen (NED)
Assistant Referee 2: Dyon Fikkert (NED)
Fourth Official: Marc Nagtegaal (NED)
VAR: Rob Dieperink (NED)
AVAR: Erwin Blank (NED)
Referee Observer: Robert Schörgenhofer (AUT)
Slovan Bratislava – Swift Hesper
Referee: Viktor Kopiyevskyy (UKR)
Assistant Referee 1: Andriy Skrypka (UKR)
Assistant Referee 2: Oleksandr Berkut (UKR)
Fourth Official: Denys Shurman (UKR)
VAR: Pawel Pskit (POL)
AVAR: Pawel Malec (POL)
Referee Observer: Alfredo Trentalange (ITA)