12 May 2015
Austria – Bulgaria
Referee: Danilo Grujić (SRB, photo)
Assistant Referee 1: Mehmet Culum (SWE)
Assistant Referee 2: Namik Huseynov (AZE)
Fourth Official: Marius Avram (ROU)
Referee Observer: Uno Tutk (EST)
Croatia – Spain
Referee: Erik Lambrechts (BEL)
Assistant Referee 1: Erik Arevshatyan (ARM)
Assistant Referee 2: Erik Weiss (SVK)
Fourth Official: Nikola Popov (BUL)
Referee Observer: Marc Batta (FRA)
Germany – Czech Republic
Referee: Alan Sant (MLT)
Assistant Referee 1: Dovydas Sužiedėlis (LTU)
Assistant Referee 2: Nuno Pereira (POR)
Fourth Official: Tsvetan Krastev (BUL)
Referee Observer: Jozef Marko (SVK)
Slovenia – Belgium
Referee: Roi Reinshreiber (ISR)
Assistant Referee 1: Gareth Jones (WAL)
Assistant Referee 2: Rejdi Avdo (ALB)
Fourth Official: Georgi Kabakov (BUL)
Referee Observer: Stefan Ormandjiev (BUL)
13 May 2015
France – Greece
Referee: Adrien Jaccottet (SUI)
Assistant Referee 1: Aleh Maslianka (BLR)
Assistant Referee 2: Mehmet Culum (SWE)
Fourth Official: Ivaylo Stoyanov (BUL)
Referee Observer: Uno Tutk (EST)
Russia – Scotland
Referee: Dumitri Muntean (MDA)
Assistant Referee 1: Sten Klaasen (EST)
Assistant Referee 2: Nuno Pereira (POR)
Fourth Official: Tsvetan Krastev (BUL)
Referee Observer: Stefan Ormandjiev (BUL)
England – Ireland
Referee: Paweł Raczkowski (POL)
Assistant Referee 1: Ville Koskiniem (FIN)
Assistant Referee 2: Namik Huseynov (AZE)
Fourth Official: Nikola Popov (BUL)
Referee Observer: Jozef Marko (SVK)
Netherlands – Italy
Referee: Mads-Kristoffer Kristoffersen (DEN)
Assistant Referee 1: Gareth Jones (WAL)
Assistant Referee 2: Erik Weiss (SVK)
Fourth Official: Georgi Kabakov (BUL)
Referee Observer: Marc Batta (FRA)