Group B of the 2021 FIFA Arab Cup took place from 30 November 2021 to 6 December 2021. The group consisted of Tunisia, the United Arab Emirates, Syria and Mauritania. 
The top two teams, Tunisia and the United Arab Emirates, advanced to the quarter-finals. 
  Teams
  Standings
   
  In the quarter-finals: 
 - Tunisia advanced to play against Oman (runners-up of Group A).
- United Arab Emirates advanced to play against Qatar (winners of Group A).
Matches
 Tunisia vs Mauritania
    Assistant referees: 
Mohammadreza Mansouri (Iran) 
Mohammadreza Abolfazli (Iran) 
Fourth official: 
Fernando Hernández Gómez (Mexico) 
Video assistant referee: 
Khamis Al-Marri (Qatar) 
Assistant video assistant referees: 
Hiroyuki Kimura (Japan) 
 United Arab Emirates vs Syria
    Assistant referees: 
Zakhele Siwela (South Africa) 
Jerson dos Santos (Angola) 
Fourth official: 
Facundo Tello (Argentina) 
Video assistant referee: 
Shaun Evans (Australia) 
Assistant video assistant referees: 
Rédouane Jiyed (Morocco) 
Danilo Manis (Brazil) 
Éber Aquino (Paraguay) 
 Mauritania vs United Arab Emirates
    Assistant referees: 
Martin Soppi (Uruguay) 
Carlos Barreiro (Uruguay) 
Fourth official: 
Alireza Faghani (Iran) 
Video assistant referee: 
Juan Soto (Venezuela) 
Assistant video assistant referees: 
Leodán González (Uruguay) 
Christian Gittelmann (Germany) 
Jair Marrufo (United States) 
 Syria vs Tunisia
    Assistant referees: 
Micheal Barwegen (Canada) 
Karen Diaz Medina (Mexico) 
Fourth official: 
Ryuji Sato (Japan) 
Video assistant referee: 
Adonai Escobedo (Mexico) 
Assistant video assistant referees: 
Éber Aquino (Paraguay) 
Osamu Nomura (Japan) 
Kevin Blom (Netherlands) 
 Syria vs Mauritania
    Assistant referees: 
Danilo Simon (Brazil) 
Bruno Pires (Brazil) 
Fourth official: 
Janny Sikazwe (Zambia) 
Video assistant referee: 
Rafael Traci (Brazil) 
Assistant video assistant referees: 
Leodán González (Uruguay) 
Zakhele Siwela (South Africa) 
Guillermo Cuadra (Spain) 
 Tunisia vs United Arab Emirates
    Assistant referees: 
Rafael Foltyn (Germany) 
Christian Gittelmann (Germany) 
Fourth official: 
Matthew Conger (New Zealand) 
Video assistant referee: 
Christian Dingert (Germany) 
Assistant video assistant referees: 
Tomasz Kwiatkowski (Poland) 
Jerson dos Santos (Angola) 
Éber Aquino (Paraguay) 
 Notes
   - ^ The rankings of April 2021 were used for seeding for the final draw. 
    - ^ a b As Diaw came on as a concussion substitute for Diop, this did not count towards the limit of five substitutions allowed for Mauritania. 
  References
  External links
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