UEFA Champions League – Semi-finals (First Leg)

2 May 2017
Real Madrid – Atletico Madrid
Referee: Martin Atkinson (ENG, photo)
Assistant Referee 1: Stephen Child (ENG)
Assistant Referee 2: Stuart Burt (ENG)
Additional AR 1: Anthony Taylor (ENG)
Additional AR 2: Michael Oliver (ENG)
Fourth Official: Jake Collin (ENG)
Referee Observer: Murat Ilgaz (TUR)

3 May 2017
AS Monaco – Juventus
Referee: Antonio Mateu Lahoz (ESP)
Assistant Referee 1: Pau Cebrián Devis (ESP)
Assistant Referee 2: Javier Aguilar Rodríguez (ESP)
Additional AR 1: Jesús Gil Manzano (ESP)
Additional AR 2: Carlos Clos Gómez (ESP)
Fourth Official: Teodoro Sobrino Magán (ESP)
Referee Observer: Jaap Uilenberg (NED)