Montenegro – North Macedonia
Referee: Stephan Klossner (SUI, photo)
Assistant Referee 1: Remy Zgraggen (SUI)
Assistant Referee 2: Marco Zürcher (SUI)
Fourth Official: Alain Bieri (SUI)
Referee Observer: Volodymyr Petrov (UKR)
Liechtenstein – Slovakia
Referee: Vilhjálmur Thórarinsson (ISL)
Assistant Referee 1: Gylfi Sigurdsson (ISL)
Assistant Referee 2: Birkir Sigurdarson (ISL)
Fourth Official: Ívar Kristjánsson (ISL)
Referee Observer: Nicolae Grigorescu (ROU)
Czech Republic – Greece
Referee: Jørgen Daugbjerg (DEN)
Assistant Referee 1: Dennis Wollenberg (DEN)
Assistant Referee 2: Niels Høg (DEN)
Fourth Official: Benjamin Willaume-Jantzen (DEN)
Referee Observer: Kristinn Jakobsson (ISL)
Finland – Malta
Referee: Robert Jenkins (WAL)
Assistant Referee 1: Lewiss Edwards (WAL)
Assistant Referee 2: Johnathon Bryant (WAL)
Fourth Official: Huw Jones (WAL)
Referee Observer: Karel Vidlák (CZE)
Denmark – Northern Ireland
Referee: Donatas Rumšas (LTU)
Assistant Referee 1: Aleksandr Radiuš (LTU)
Assistant Referee 2: Vytis Snarskis (LTU)
Fourth Official: Donatas Šimėnas (LTU)
Referee Observer: Martin Hansson (SWE)
Scotland – Lithuania
Referee: Krzysztof Jakubik (POL)
Assistant Referee 1: Arkadiusz Wójcik (POL)
Assistant Referee 2: Tomasz Niemirowski (POL)
Fourth Official: Piotr Urban (POL)
Referee Observer: Antonio Damato (ITA)
Romania – Ukraine
Referee: Bartosz Frankowski (POL)
Assistant Referee 1: Marcin Borkowski (POL)
Assistant Referee 2: Jakub Winkler (POL)
Fourth Official: Tomasz Kwiatkowski (POL)
Referee Observer: Gevorg Hovhannisyan (ARM)
France – Azerbaijan
Referee: António Nobre (POR)
Assistant Referee 1: Nuno Pereira (POR)
Assistant Referee 2: Bruno Alves (POR)
Fourth Official: Hélder Malheiro (POR)
Referee Observer: Dejan Filipović (SRB)
Ireland – Italy
Referee: Sascha Stegemann (GER)
Assistant Referee 1: Christian Gittelmann (GER)
Assistant Referee 2: Rafael Foltyn (GER)
Fourth Official: Harm Osmers (GER)
Referee Observer: Geórgios Bíkas (GRE)
Armenia – Luxembourg
Referee: Sebastian Gishamer (AUT)
Assistant Referee 1: Roland Riedel (AUT)
Assistant Referee 2: Markus Waldl (AUT)
Fourth Official: Walter Altmann (AUT)
Referee Observer: Vladimir Antonov (MDA)
Russia – Poland
Referee: Pavel Orel (CZE)
Assistant Referee 1: Petr Blažej (CZE)
Assistant Referee 2: Jiří Kříž (CZE)
Fourth Official: Pavel Rejžek (CZE)
Referee Observer: Sokol Jareci (ALB)
Moldova – Wales
Referee: Ümit Öztürk (TUR)
Assistant Referee 1: İbrahim Uyarcan (TUR)
Assistant Referee 2: Osman Bilir (TUR)
Fourth Official: Abdulkadir Bitigen (TUR)
Referee Observer: Sascha Amhof (SUI)
Belarus – Norway
Referee: Enea Jorgji (ALB)
Assistant Referee 1: Ridiger Çokaj (ALB)
Assistant Referee 2: Denis Rexha (ALB)
Fourth Official: Kreshnik Bajramaj (ALB)
Referee Observer: Fritz Stuchlik (AUT)
Bulgaria – Serbia
Referee: Giorgi Kruashvili (GEO)
Assistant Referee 1: Zaza Menteshashvili (GEO)
Assistant Referee 2: Zaza Pipia (GEO)
Fourth Official: Giorgi Vadachkoria (GEO)
Referee Observer: Andreas Schluchter (SUI)
Estonia – Latvia
Referee: Rauf Cabarov (AZE)
Assistant Referee 1: Namiq Hüseynov (AZE)
Assistant Referee 2: Rza Mammadov (AZE)
Fourth Official: Elçin Masiyev (AZE)
Referee Observer: Ladislav Gádoši (SVK)
Netherlands – Portugal
Referee: Roi Reinshreiber (ISR)
Assistant Referee 1: Matityahu Yakobov (ISR)
Assistant Referee 2: Dan Ucenic (ISR)
Fourth Official: Ohad Asulin (ISR)
Referee Observer: Kostadin Gerginov (BUL)
Switzerland – Georgia
Referee: Trustin Farrugia Cann (MLT)
Assistant Referee 1: Alan Camilleri (MLT)
Assistant Referee 2: Christopher Francalanza (MLT)
Fourth Official: Stephen Pace (MLT)
Referee Observer: Erol Ersoy (TUR)
Austria – Turkey
Referee: Kirill Levnikov (RUS)
Assistant Referee 1: Dmitri Mosyakin (RUS)
Assistant Referee 2: Aleksei Vorontsov (RUS)
Fourth Official: Vasili Kazartsev (RUS)
Referee Observer: Peter Sippel (GER)
Sweden – Iceland
Referee: Lawrence Visser (BEL)
Assistant Referee 1: Thibaud Nijssen (BEL)
Assistant Referee 2: Jo de Weirdt (BEL)
Fourth Official: Bram Van Driessche (BEL)
Referee Observer: Miroslav Vitković (CRO)