UEFA Champions League – Semi-finals (First Leg)

23 April 2013
Bayern Munchen – FC Barcelona
Referee: Viktor Kassai (HUN, photo)
Assistant Referee 1: Robert Kispal (HUN)
Assistant Referee 2: Gabor Eros (HUN)
Additional AR 1: Tamas Bognar (HUN)
Additional AR 2: Mihaly Fabian (HUN)
Fourth Official: Gyorgy Ring (HUN)
Referee Observer: Bertrand Layec (FRA)

24 April 2013
Borussia Dortmund – Real Madrid
Referee: Bjorn Kuipers (NED)
Assistant Referee 1: Sander van Roekel (NED)
Assistant Referee 2: Erwin Zeinstra (NED)
Additional AR 1: Pol van Boekel (NED)
Additional AR 2: Richard Liesveld (NED)
Fourth Official: Berry Simons (NED)
Referee Observer: Hugh Dallas (SCO)