Referee: Nikola Dabanović MNE (photo)
Assistant Referee 1: Vladan Todorović MNE
Assistant Referee 2: Srdjan Jovanović MNE
Fourth Official: Miloš Bošković MNE
VAR: Clay Ruperti NED
AVAR: Erwin Blank NED
Referee Observer: Sokol Jareci ALB
Panathinaikos – Fiorentina
Referee: Erik Lambrechts BEL
Assistant Referee 1: Jo de Weirdt BEL
Assistant Referee 2: Kevin Monteny BEL
Fourth Official: Wim Smet BEL
VAR: Bram Van Driessche BEL
AVAR: Jan Boterberg BEL
Referee Observer: Pascal Garibian FRA
FK Molde – Legia Warszawa
Referee: Horațiu Feșnic ROU
Assistant Referee 1: Valentin Avram ROU
Assistant Referee 2: Alexandru Cerei ROU
Fourth Official: Szabolcs Kovacs ROU
VAR: Ovidiu Haţegan ROU
AVAR: Sorin Costreie ROU
Referee Observer: Martin Atkinson ENG
FC Copenhagen – Chelsea FC
Referee: Georgi Kabakov BUL
Assistant Referee 1: Martin Margaritov BUL
Assistant Referee 2: Martin Venev BUL
Fourth Official: Radoslav Gidzhenov BUL
VAR: Dragomir Draganov BUL
AVAR: Vasimir El-Hatib BUL
Referee Observer: Jan Wegereef NED
Jagiellonia Bialystok – Cercle Brugge
Referee: Anastasios Sidiropoulos GRE
Assistant Referee 1: Polychronis Kostaras GRE
Assistant Referee 2: Lazaros Dimitriadis GRE
Fourth Official: Alexandros Tsakalidis GRE
VAR: Angelos Evangelou GRE
AVAR: Stefanos Koumparakis GRE
Referee Observer: Jon Skjervold NOR
NK Celje – FC Lugano
Referee: António Nobre POR
Assistant Referee 1: Pedro Ribeiro POR
Assistant Referee 2: Nelson Pereira POR
Fourth Official: Fabio Verissimo POR
VAR: Helder Malheiro POR
AVAR: André Narciso POR
Referee Observer: Alain Hamer LUX
Borac Baja Luka – Rapid Wien
Referee: Jérôme Brisard FRA
Assistant Referee 1: Erwan Finjean FRA
Assistant Referee 2: Brice Le Tellier FRA
Fourth Official: Romain Lissorgue FRA
VAR: Bastien Dechepy FRA
AVAR: Eric Wattellier FRA
Referee Observer: Itchko Lozev BUL
Pafos FC – Djugardens IF
Referee: Giorgi Kruashvili GEO
Assistant Referee 1: Levan Varamishvili GEO
Assistant Referee 2: Giorgi Elikashvili GEO
Fourth Official: Giorgi Avazashvili GEO
VAR: Luca Pairetto ITA
AVAR: Aleko Aptsiauri GEO
Referee Observer: Uno Tutk EST
Referee: Erik Lambrechts BEL
Assistant Referee 1: Jo de Weirdt BEL
Assistant Referee 2: Kevin Monteny BEL
Fourth Official: Wim Smet BEL
VAR: Bram Van Driessche BEL
AVAR: Jan Boterberg BEL
Referee Observer: Pascal Garibian FRA
FK Molde – Legia Warszawa
Referee: Horațiu Feșnic ROU
Assistant Referee 1: Valentin Avram ROU
Assistant Referee 2: Alexandru Cerei ROU
Fourth Official: Szabolcs Kovacs ROU
VAR: Ovidiu Haţegan ROU
AVAR: Sorin Costreie ROU
Referee Observer: Martin Atkinson ENG
FC Copenhagen – Chelsea FC
Referee: Georgi Kabakov BUL
Assistant Referee 1: Martin Margaritov BUL
Assistant Referee 2: Martin Venev BUL
Fourth Official: Radoslav Gidzhenov BUL
VAR: Dragomir Draganov BUL
AVAR: Vasimir El-Hatib BUL
Referee Observer: Jan Wegereef NED
Jagiellonia Bialystok – Cercle Brugge
Referee: Anastasios Sidiropoulos GRE
Assistant Referee 1: Polychronis Kostaras GRE
Assistant Referee 2: Lazaros Dimitriadis GRE
Fourth Official: Alexandros Tsakalidis GRE
VAR: Angelos Evangelou GRE
AVAR: Stefanos Koumparakis GRE
Referee Observer: Jon Skjervold NOR
NK Celje – FC Lugano
Referee: António Nobre POR
Assistant Referee 1: Pedro Ribeiro POR
Assistant Referee 2: Nelson Pereira POR
Fourth Official: Fabio Verissimo POR
VAR: Helder Malheiro POR
AVAR: André Narciso POR
Referee Observer: Alain Hamer LUX
Borac Baja Luka – Rapid Wien
Referee: Jérôme Brisard FRA
Assistant Referee 1: Erwan Finjean FRA
Assistant Referee 2: Brice Le Tellier FRA
Fourth Official: Romain Lissorgue FRA
VAR: Bastien Dechepy FRA
AVAR: Eric Wattellier FRA
Referee Observer: Itchko Lozev BUL
Pafos FC – Djugardens IF
Referee: Giorgi Kruashvili GEO
Assistant Referee 1: Levan Varamishvili GEO
Assistant Referee 2: Giorgi Elikashvili GEO
Fourth Official: Giorgi Avazashvili GEO
VAR: Luca Pairetto ITA
AVAR: Aleko Aptsiauri GEO
Referee Observer: Uno Tutk EST
