12 February 2019
Manchester United – Paris Saint Germain
Referee: Daniele Orsato (ITA, photo)
Assistant Referee 1: Fabiano Preti (ITA)
Assistant Referee 2: Alessandro Costanzo (ITA)
Fourth Official: Daniele Doveri (ITA)
VAR: Massimiliano Irrati (ITA)
AVAR: Marco Guida (ITA)
Referee Observer: Eugen Strigel (GER)
AS Roma – FC Porto
Referee: Danny Makkelie (NED)
Assistant Referee 1: Mario Diks (NED)
Assistant Referee 2: Hessel Steegstra (NED)
Fourth Official: Kevin Blom (NED)
VAR: Pol van Boekel (NED)
AVAR: Jochem Kamphuis (NED)
Referee Observer: Herbert Fandel (GER)
13 February 2019
Tottenham Hotspur – Borussia Dortmund
Referee: Antonio Mateu Lahoz (ESP)
Assistant Referee 1: Pau Cebrian Devís (ESP)
Assistant Referee 2: Roberto Díaz Perez (ESP)
Fourth Official: Xavier Estrada Fernandez (ESP)
VAR: Alejandro Hernandez Hernandez (ESP)
AVAR: Juan Martínez Munuera (ESP)
Referee Observer: Hans Reijgwart (NED)
AFC Ajax – Real Madrid
Referee: Damir Skomina (SVN)
Assistant Referee 1: Jure Praprotnik (SVN)
Assistant Referee 2: Robert Vukan (SVN)
Fourth Official: Rade Obrenovič (SVN)
VAR: Szymon Marciniak (POL)
AVAR: Pawel Gil (POL)
Referee Observer: Marc Batta (FRA)