18:45 CET - Leipzig (RB Arena)
RB Leipzig (GER) - BSC Young Boys (SUI) | Group G
Referee: Manfredas Lukjančukas LTU
Assistant Referee 1: Mangirdas Mirauskas LTU
Assistant Referee 2: Vytenis Kazlauskas LTU
Fourth Official: Vilius Paulauskas LTU
Video Assistant Referee: Stuart Attwell ENG
Assistant Video Assistant Referee: Nejc Kajtazović SVN
UEFA Referee Observer: Bernardino González Vázquez ESP
UEFA Delegate: Knut Bjørn Nordheim NOR
18:45 CET - Belgrade (Stadion Rajko Mitić)
FK Crvena zvezda (SRB) - Manchester City (ENG) | Group G
Referee: Aliyar Aghayev AZE
Assistant Referee 1: Zeynal Zeynalov AZE
Assistant Referee 2: Akif Amirali AZE
Fourth Official: Elchin Masiyev AZE
Video Assistant Referee: Alper Ulusoy TUR
Assistant Video Assistant Referee: Abdulkadir Bitigen TUR
UEFA Referee Observer: Alberto Undiano Mallenco ESP
UEFA Delegate: Luis Cuervas Del Real ENG
21:00 CET - Madrid (Estadio Metropolitano)
Club Atlético de Madrid (ESP) - SS Lazio (ITA) | Group E
Referee: Serdar Gözübüyük NED
Assistant Referee 1: Erwin . J. Zeinstra NED
Assistant Referee 2: Johan Balder NED
Fourth Official: Joey Kooij NED
Video Assistant Referee: Marco Fritz GER
Assistant Video Assistant Referee: Fedayi San SUI
UEFA Referee Observer: Darko Čeferin SVN
UEFA Delegate: Dane Jošt SVN
21:00 CET - Glasgow (Celtic Park)
Celtic FC (SCO) - Feyenoord Rotterdam (NED) | Group E
Referee: Benoît Bastien FRA
Assistant Referee 1: Hicham Zakrani FRA
Assistant Referee 2: Aurélien Berthomieu FRA
Fourth Official: Jérémie Pignard FRA
Video Assistant Referee: Benoît Millot FRA
Assistant Video Assistant Referee: Tiago Martins POR
UEFA Referee Observer: Jon Skjervold NOR
UEFA Delegate: Renata Tomášová SVK
21:00 CET - Dortmund (BVB Stadion)
Borussia Dortmund (GER) - Paris Saint-Germain (FRA) | Group F
Referee: Glenn Nyberg SWE
Assistant Referee 1: Mahbod Beigi SWE
Assistant Referee 2: Andreas Söderqvist SWE
Fourth Official: Adam Ladebäck SWE
Video Assistant Referee: Dennis Johan Higler NED
Assistant Video Assistant Referee: Pol van Boekel NED
UEFA Referee Observer: Marinus Koopman NED
UEFA Delegate: Adonis Procopiou CYP
21:00 CET - Newcastle (St. James' Park)
Newcastle United FC (ENG) - AC Milan (ITA) | Group F
Referee: Danny Makkelie NED
Assistant Referee 1: Hessel Steegstra NED
Assistant Referee 2: Jan de Vries NED
Fourth Official: Allard Lindhout NED
Video Assistant Referee: Rop Dieperink NED
Assistant Video Assistant Referee: Clay Ruperti NED
UEFA Referee Observer: Andreas Schluchter SUI
UEFA Delegate: Felix Grigore ROU
21:00 CET - Porto (Estádio do Dragão)
FC Porto (POR) - FK Shakhtar Donetsk (UKR) | Group H
Referee: István Kovács ROU
Assistant Referee 1: Vasile Florin Marinescu ROU
Assistant Referee 2: Mihai Ovidiu Artene ROU
Fourth Official: Marcel Birsan ROU
Video Assistant Referee: Massimiliano Irrati ITA
Assistant Video Assistant Referee: Cătălin Popa ROU
UEFA Referee Observer: Markus Nobs SUI
UEFA Delegate: Patrick Wattebled FRA
21:00 CET - Deurne (Bosuil)
Royal Antwerp FC (BEL) - FC Barcelona (ESP) | Group H
Referee: Marco Guida ITA
Assistant Referee 1: Filippo Meli ITA
Assistant Referee 2: Stefano Alassio ITA
Fourth Official: Simone Sozza ITA
Video Assistant Referee: Paolo Valeri ITA
Assistant Video Assistant Referee: David Coote ENG
UEFA Referee Observer: Leslie Irvine NIR
UEFA Delegate: Konul Mehtiyeva AZE