2021 FIFA Arab Cup Group B

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.

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).

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)