Referee: Carlos Velasco Carballo (ESP, photo)
Assistant Referee 1: Juan Yuste Jimenez (ESP)
Assistant Referee 2: Fermin Martinez Ibanez (ESP)
Additional AR 1: Carlos Clos Gomez (ESP)
Additional AR 2: Carlos del Cerro Grande (ESP)
Fourth Official: Javier Turienzo Alvarez (ESP)
FC Twente – Schalke
Referee: Craig Thomson (SCO)
Assistant Referee 1: Alasdair Ross (SCO)
Assistant Referee 2: Graham Chambers (SCO)
Additional AR 1: William Collum (SCO)
Additional AR 2: Steven McLean (SCO)
Fourth Official: Robert Madden (SCO)
Metalist Kharkov – Olympiacos Piraeus
Referee: Istvan Vad (HUN)
Assistant Referee 1: Gabor Eros (HUN)
Assistant Referee 2: Gyorgy Ring (HUN)
Additional AR 1: Mihaly Fabian (HUN)
Additional AR 2: Tamas Bognar (HUN)
Fourth Official: Sandor Ando-Szabo (HUN)
Manchester United – Athletic Bilbao
Referee: Florian Meyer (GER)
Assistant Referee 1: Holger Henschel (GER)
Assistant Referee 2: Jan-Hendrik Salver (GER)
Additional AR 1: Deniz Aytekin (GER)
Additional AR 2: Markus Wingenbach (GER)
Fourth Official: Michael Weiner (GER)
Atletico Madrid – Besiktas
Referee: Jonas Eriksson (SWE)
Assistant Referee 1: Fredrik Nilsson (SWE)
Assistant Referee 2: Mathias Klasenius (SWE)
Additional AR 1: Markus Strombergsson (SWE)
Additional AR 2: Stefan Johannesson (SWE)
Fourth Official: Daniel Stalhammar (SWE)
AZ Alkmaar – Udinese
Referee: David Fernandez Borbalan (ESP)
Assistant Referee 1: Raul Cabanero Martinez (ESP)
Assistant Referee 2: Jorge Canelo Prieto (ESP)
Additional AR 1: Eduardo Iturralde Gonzalez (ESP)
Additional AR 2: Javier Estrada Fernandez (ESP)
Fourth Official: Ignacio Iglesias Villanueva (ESP)
Standard Liege – Hannover
Referee: Tony Chapron (FRA)
Assistant Referee 1: Emmanuel Boisdenghien (FRA)
Assistant Referee 2: Fredji Harchay (FRA)
Additional AR 1: Said Ennjimi (FRA)
Additional AR 2: Clement Turpin (FRA)
Fourth Official: Alexandre Castro (FRA)
Valencia – PSV Eindhoven
Referee: Manuel Grafe (GER)
Assistant Referee 1: Markus Hacker (GER)
Assistant Referee 2: Guido Kleve (GER)
Additional AR 1: Christian Dingert (GER)
Additional AR 2: Tobias Welz (GER)
Fourth Official: Peter Sippel (GER)