Group B of the men's football tournament at the 2020 Summer Olympics was played from 22 to 28 July 2021 in Kashima's Kashima Stadium, Sapporo's Sapporo Dome and Yokohama's International Stadium Yokohama.
[1] The group consistsed of Honduras, New Zealand, Romania and South Korea.
[2] The top two teams, South Korea and New Zealand, advanced to the knockout stage.
[3] In the quarter-finals, Assistant referees: Arsenio Marengula (Mozambique) Souru Phatsoane (Lesotho) Fourth official: Artur Soares Dias (Portugal) Video assistant referee: Benoît Millot (France) Assistant video assistant referee: Guillermo Cuadra Fernández (Spain) Assistant referees: Nicolás Taran (Uruguay) Richard Trinidad (Uruguay) Fourth official: Ismail Elfath (United States) Video assistant referee: Andrés Cunha (Uruguay) Assistant video assistant referee: Bibiana Steinhaus (Germany) Assistant referees: Roy Hassan (Israel) Idan Yarkoni (Israel) Fourth official: Chris Beath (Australia) Video assistant referee: Roi Reinshreiber (Israel) Assistant video assistant referee: Benoît Millot (France) Assistant referees: Tulio Moreno (Venezuela) Lubin Torrealba (Venezuela) Fourth official: Iván Barton (El Salvador) Video assistant referee: Mauro Vigliano (Argentina) Assistant video assistant referee: Wagner Reway (Brazil) Assistant referees: Michael Orué (Peru) Jesús Sánchez (Peru) Fourth official: Hiroyuki Kimura (Japan) Video assistant referee: Andrés Cunha (Uruguay) Assistant video assistant referee: Erick Miranda (Mexico) Assistant referees: Diyan Valkov (Bulgaria) Martin Margaritov (Bulgaria) Fourth official: Victor Gomes (South Africa) Video assistant referee: Adil Zourak (Morocco) Assistant video assistant referee: Abdulkadir Bitigen (Turkey) Fair play points would have been used as a tiebreaker if the overall and head-to-head records of teams were tied.
These were calculated based on yellow and red cards received in all group matches as follows:[3] Only one of the above deductions is applied to a player in a single match.