Liverpool - Porto
Referee: Antonio Miguel Mateu Lahoz (ESP)
Assistant Referee 1: Pau Cebrián Devís (ESP)
Assistant Referee 2: Roberto Díaz Pérez del Palomar (ESP)
Fourth Official: Ovidiu Alin Hațegan (ROU)
Video Assistant Referee: Jesús Gil Manzano (ESP)
Assistant Video Assistant Referee: José María Sánchez Martínez (ESP)
Referee: Björn Kuipers (NED)
Assistant Referee 1: Sander van Roekel (NED)
Assistant Referee 2: Erwin Zeinstra (NED)
Fourth Official: William Collum (SCO)
Video Assistant Referee: Danny Makkelie (NED)
Assistant Video Assistant Referee: Pol van Boekel (NED)
Manchester United FC - Barcellona
Referee: Gianluca Rocchi (ITA)
Assistant Referee 1: Filippo Meli (ITA)
Assistant Referee 2: Matteo Passeri (ITA)
Fourth Official: Daniele Orsato (ITA)
Video Assistant Referee: Massimiliano Irrati (ITA)
Assistant Video Assistant Referee: Marco Guida (ITA)