AFC Champions League 2021 – Semi-finals

West Region (19 October 2021)

Al Nassr – Al Hilal
Referee: Christopher Beath (AUS, photo)
Assistant Referee 1: Anton Shchetinin (AUS)
Assistant Referee 2: George Lakrindis (AUS)
Fourth Official: Ilgiz Tantashev (UZB)
VAR: Shaun Evans (AUS)

East Region (20 October 2021)

Ulsan Hyundai – Pohang Steelers
Referee: Abdulrahman Al Jassim (QAT)
Assistant Referee 1: Taleb Al Marri (QAT)
Assistant Referee 2: Saoud Al Maqaleh (QAT)
Fourth Official: Saoud Al Adba (QAT)
VAR: Khamis Al Marri (QAT)