FIFA Futsal World Cup 2021 – Semi-finals

29 September 2021
Brazil – Argentina 
Referee 1: Juan Cordero (ESP, photo)
Referee 2: Alejandro Martinez (ESP, photo)
Third Official: Tomohiro Kozaki (JPN)
Timekeeper: Chiara Perona (ITA)
Reserve AR: Ryan Shepheard (AUS)

30 September 2021
Portugal – Kazakhstan
Referee 1: Nikola Jelic (CRO)
Referee 2: Daniel Rodriguez (URU)
Third Official: Diego Molina (CRC)
Timekeeper: Ebrahim Mehrabi (IRN)
Reserve AR: Jorge Flores (SLV)