AC Milan – Rukh Lviv
Referee: Christian Ciochirca (AUT, photo)
Assistant Referee 1: Maximilian Weiss (AUT)
Assistant Referee 2: Michael Obritzberger (AUT)
Fourth Official: Matteo Marcenaro (ITA)
Referee Observer: Roberto Rosetti (ITA)
Hajduk Split – Manchester City
Referee: Snir Levi (ISR)
Assistant Referee 1: Idan Zoler (ISR)
Assistant Referee 2: Tuval Koltunoff (ISR)
Fourth Official: Ante Terzić (CRO)
Referee Observer: Igor Pristovnik (CRO)
Borussia Dortmund – Paris St. Germain
Referee: Goga Kikacheishvili (GEO)
Assistant Referee 1: Davit Gabisonia (GEO)
Assistant Referee 2: Davit Akhvlediani (GEO)
Fourth Official: Robin Braun (GER)
Referee Observer: Sven Bindels (LUX)
1 March 2023
Sporting CP – AFC Ajax
Referee: Matthew De Gabriele (MLT)
Assistant Referee 1: Jurgen Spiteri (MLT)
Assistant Referee 2: Mitchell Scerri (MLT)
Fourth Official: Andre Narciso (POR)
Referee Observer: Manuel Diaz Vega (ESP)
Real Madrid – FC Salzburg
Referee: Marian Barbu (ROU)
Assistant Referee 1: George Neacșu (ROU)
Assistant Referee 2: Adrian Vornicu (ROU)
Fourth Official: Pedro Munoz Piedra (ESP)
Referee Observer: Ian Stokes (IRL)
FC Barcelona – AZ Alkmaar
Referee: Ondřej Berka (CZE)
Assistant Referee 1: Matěj Vlček (CZE)
Assistant Referee 2: Lukaš Machač (CZE)
Fourth Official: David Lopez Jimenez (ESP)
Referee Observer: Salustia Cipres (AND)
Liverpool FC – FC Porto
Referee: Helgi Jonasson (ISL)
Assistant Referee 1: Egill Gudlaugsson (ISL)
Assistant Referee 2: Eysteinn Hrafnkelsson (ISL)
Fourth Official: Benjamin Speedie (ENG)
Referee Observer: Kevin Parry (WAL)
Atletico de Madrid – KRC Genk
Referee: Chrysovalandis Theouli (CYP)
Assistant Referee 1: Pavlos Georgiou (CYP)
Assistant Referee 2: Kyriakos Sokratous (CYP)
Fourth Official: Fernando Bueno Prieto (ESP)
Referee Observer: Lucilio Batista (POR)
Referee: Christian Ciochirca (AUT, photo)
Assistant Referee 1: Maximilian Weiss (AUT)
Assistant Referee 2: Michael Obritzberger (AUT)
Fourth Official: Matteo Marcenaro (ITA)
Referee Observer: Roberto Rosetti (ITA)
Hajduk Split – Manchester City
Referee: Snir Levi (ISR)
Assistant Referee 1: Idan Zoler (ISR)
Assistant Referee 2: Tuval Koltunoff (ISR)
Fourth Official: Ante Terzić (CRO)
Referee Observer: Igor Pristovnik (CRO)
Borussia Dortmund – Paris St. Germain
Referee: Goga Kikacheishvili (GEO)
Assistant Referee 1: Davit Gabisonia (GEO)
Assistant Referee 2: Davit Akhvlediani (GEO)
Fourth Official: Robin Braun (GER)
Referee Observer: Sven Bindels (LUX)
1 March 2023
Sporting CP – AFC Ajax
Referee: Matthew De Gabriele (MLT)
Assistant Referee 1: Jurgen Spiteri (MLT)
Assistant Referee 2: Mitchell Scerri (MLT)
Fourth Official: Andre Narciso (POR)
Referee Observer: Manuel Diaz Vega (ESP)
Real Madrid – FC Salzburg
Referee: Marian Barbu (ROU)
Assistant Referee 1: George Neacșu (ROU)
Assistant Referee 2: Adrian Vornicu (ROU)
Fourth Official: Pedro Munoz Piedra (ESP)
Referee Observer: Ian Stokes (IRL)
FC Barcelona – AZ Alkmaar
Referee: Ondřej Berka (CZE)
Assistant Referee 1: Matěj Vlček (CZE)
Assistant Referee 2: Lukaš Machač (CZE)
Fourth Official: David Lopez Jimenez (ESP)
Referee Observer: Salustia Cipres (AND)
Liverpool FC – FC Porto
Referee: Helgi Jonasson (ISL)
Assistant Referee 1: Egill Gudlaugsson (ISL)
Assistant Referee 2: Eysteinn Hrafnkelsson (ISL)
Fourth Official: Benjamin Speedie (ENG)
Referee Observer: Kevin Parry (WAL)
Atletico de Madrid – KRC Genk
Referee: Chrysovalandis Theouli (CYP)
Assistant Referee 1: Pavlos Georgiou (CYP)
Assistant Referee 2: Kyriakos Sokratous (CYP)
Fourth Official: Fernando Bueno Prieto (ESP)
Referee Observer: Lucilio Batista (POR)