UEFA Champions League 2020/2021 – Quarter-finals (Second Leg)

13 April 2021 
Paris Saint Germain – Bayern München
Referee: Daniele Orsato (ITA, photo)
Assistant Referee 1: Alessandro Giallatini (ITA)
Assistant Referee 2: Fabiano Preti (ITA)
Fourth Official: Daniele Doveri (ITA)
VAR: Massimiliano Irrati (ITA)
AVAR: Marco Guida (ITA)
Referee Observer: William Young (SCO)

Chelsea – FC Porto
Referee: Clement Turpin (FRA)
Assistant Referee 1: Nicolas Danos (FRA) 
Assistant Referee 2: Cyril Gringore (FRA)
Fourth Official: Frank Schneider (FRA)
VAR: François Letexier (FRA)
AVAR: Jerôme Brisard (FRA)
Referee Observer: Juan Fernandez Marin (ESP)

14 April 2021
Liverpool FC – Real Madrid
Referee: Björn Kuipers (NED)
Assistant Referee 1: Sander van Roekel (NED)
Assistant Referee 2: Erwin Zeinstra (NED)
Fourth Official: Anastasios Sidiropoulos (GRE)
VAR: Pol van Boekel (NED)
AVAR: Dennis Higler (NED)
Referee Observer: Lutz-Michael Fröhlich (GER)

Borussia Dortmund – Manchester City
Referee: Carlos Del Cerro Grande (ESP)
Assistant Referee 1: Juan Yuste Jimenez (ESP)
Assistant Referee 2: Roberto Alonso Fernandez (ESP)
Fourth Official: Jose Sanchez Martinez (ESP)
VAR: Juan Martinez Munuera (ESP)
AVAR: Jesus Gil Manzano (ESP)
Referee Observer: Markus Nobs (SUI)