
The COVID-19 pandemic has caused the most significant disruption to the worldwide sporting calendar since World War II. Across the world and to varying degrees, sports events have been cancelled or postponed. The 2020 Summer Olympics in Tokyo were rescheduled to 2021. Spectators have no games to watch and players no games to play. Only a few countries and territories, such as Hong Kong, Turkmenistan, Belarus, and Nicaragua, have continued professional sporting matches as planned.

The 2020–21 NWHL season is the sixth season of the National Women's Hockey League in North America. Due to the ongoing COVID-19 pandemic, the season was held in a bubble in Lake Placid, New York, from January to February 2021, with all five teams returning from the previous season, along with the Toronto Six expansion team as the first Canada-based team to play in the league. The season was suspended again due to positive cases of COVID-19 within the bubble. On March 8, 2021, the league announced that the Isobel Cup playoffs would re-commence on March 26 and 27 at Warrior Ice Arena in Brighton, Massachusetts.

The COVID-19 pandemic has caused disruption to association football across the world, mirroring its impact across all sports. Across the world and to varying degrees, leagues and competitions have been cancelled or postponed.

The Chatham Cup, currently known as the ISPS Handa Chatham Cup for sponsorship purposes, is New Zealand's premier knockout tournament in men's association football. It is held annually, with the final contested in September. The current champions of the Chatham Cup are 2019 winners Napier City Rovers, who defeated Melville United 3–2 in the final. What would have been the current edition of the competition for 2020, was cancelled because of COVID-19.

The COVID-19 pandemic has caused disruption to cricket across the world, mirroring its impact across all sports. Across the world and to varying degrees, leagues and competitions have been cancelled or postponed.

The COVID-19 pandemic has caused disruption to disc golf across the world, mirroring its impact across all sports. Throughout the world and to varying degrees, leagues and competitions have been cancelled or postponed.

The 2020 European Le Mans Series was the seventeenth season of the Automobile Club de l'Ouest's (ACO) European Le Mans Series. The six-event season began at Circuit Paul Ricard on 19 July and finished at Algarve International Circuit on 1 November.

The 2019–20 FIA Formula E Championship was the sixth season of the FIA Formula E championship, a motor racing championship for electrically powered vehicles recognised by motorsport's governing body, the Fédération Internationale de l'Automobile (FIA), as the highest class of competition for electric open-wheel racing cars.

The 2020 FIA Formula One World Championship was the motor racing championship for Formula One cars which marked the 70th anniversary of the first Formula One World Drivers' Championship. The championship was recognised by the governing body of international motorsport, the Fédération Internationale de l'Automobile (FIA), as the highest class of competition for open-wheel racing cars. Drivers and teams competed for the titles of World Drivers' Champion and World Constructors' Champion respectively.

As with other sports, the COVID-19 pandemic has caused disruption to Gaelic games, primarily in Ireland but also elsewhere in the world. Competitions have been cancelled, postponed or restructured, while some teams have withdrawn or been unable to participate in those that have gone ahead.

The COVID-19 pandemic in the Republic of Ireland has had a significant impact on the conduct of sports, affecting both competitive sports leagues and tournaments and recreational sports.

Jelle's Marble Runs is a YouTube channel based in the Netherlands, run by the brothers Jelle and Dion Bakker. It is based around marbles, marble runs and marble races. Content on the channel includes spoofing the Olympic Games, Formula One, and other sporting events. Additionally, they create stand-alone competitions around holidays, with the marble names in the style of the holiday. These videos treat the cast of marbles as though they were athletes. Acting as though the inanimate marbles use actual tactics, training, and psychology to compete, fans participate in an elaborate kayfabe to create engaging marble sports.

The 2020 FIM MotoGP World Championship was the premier class of the 72nd F.I.M. Road Racing World Championship season.

The COVID-19 pandemic has caused disruption to motorsport across the world, mirroring its impact across all sports. Across the world and to varying degrees, events and competitions have been cancelled or postponed.

The 2020 NFL Draft was the 85th annual meeting of National Football League (NFL) franchises to select newly eligible players for the 2020 NFL season. The first round was held on April 23, followed by the second and third rounds on April 24. The draft concluded with rounds 4–7 on April 25. The NFL originally planned to hold the event live in Paradise, Nevada, before all public events related to it were canceled due to the COVID-19 pandemic. Instead, all team selections took place via videoconferencing with league commissioner Roger Goodell broadcasting picks from his home.

The COVID-19 pandemic had a significant impact on the conduct of sports in the Philippines affecting both competitive sports leagues and tournaments and recreational sports.

The 2020 FIA World Rally Championship was the forty-eighth season of the World Rally Championship, an auto racing competition recognised by the Fédération Internationale de l'Automobile (FIA) as the highest class of international rallying. Teams and crews were competing in seven rallies for the World Rally Championships for Drivers, Co-drivers and Manufacturers. Crews were free to compete in cars complying with Rally1 and Rally2 regulations; however, only manufacturers competing with World Rally Cars homologated under regulations introduced in 2017 were eligible to score points in the Manufacturers' championship. The championship began in January 2020 with the Rallye Monte-Carlo and concluded in December 2020 with Rally Monza. The series was supported by the World Rally Championship-2, World Rally Championship-3 and Junior World Rally Championship categories at selected events.

The 2021 FIA World Rally Championship is the forty-ninth season of the World Rally Championship, an auto racing competition recognised by the Fédération Internationale de l'Automobile (FIA) as the highest class of international rallying. Teams and crews are competing in twelve rallies for the World Rally Championships for Drivers, Co-drivers, Teams and Manufacturers. Crews are free to compete in cars complying with Rally1 and Rally2 regulations; however, only manufacturers competing with Rally1 cars homologated under regulations introduced in 2017 are eligible to score points in the Manufacturers' championship. The championship is due to begin in January 2021 with the Rallye Monte-Carlo and conclude in November 2021 with Rally Japan. The series are be supported by the World Rally Championship-2 and World Rally Championship-3 categories at every round of the championship and by the Junior World Rally Championship at selected events.

The 2021 Rose Bowl was a college football bowl game being played on January 1, 2021, with kickoff at 3:00 p.m. CST at AT&T Stadium in Arlington, Texas. The 107th playing of the Rose Bowl Game, it was one of two College Football Playoff (CFP) semifinal games; its winner will face the winner of the Sugar Bowl at the 2021 College Football Playoff National Championship. It was also one of the 2020–21 bowl games concluding the 2020 FBS football season.

The 2020 Speed Energy Stadium Super Trucks season is the eighth season of the Stadium Super Trucks and the first in which the series is split into two championships, with the Speed Energy Stadium Super Trucks in the United States and the Boost Mobile Super Trucks in Australia.

Super Bowl LV was the championship game of the National Football League (NFL) for the 2020 NFL season. The National Football Conference (NFC) champion Tampa Bay Buccaneers defeated the American Football Conference (AFC) champion Kansas City Chiefs, 31–9. The game took place on February 7, 2021, at Raymond James Stadium in Tampa, Florida, the home stadium of the Buccaneers, marking the first time that a team played a Super Bowl in its home stadium. Due to COVID-19 protocols limiting the stadium's seating capacity to 25,000 fans, it was the least-attended Super Bowl.

The 2020 Supercopa de España de Baloncesto, also known as Supercopa Endesa for sponsorship reasons, was the 17th edition of the Supercopa de España de Baloncesto, an annual basketball competition for clubs in the Spanish basketball league system that were successful in its major competitions in the preceding season. All matches were played behind closed doors due to the COVID-19 pandemic.

UFC Fight Night: Lee vs. Oliveira was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on March 14, 2020 at Ginásio Nilson Nelson in Brasília, Brazil.

UFC Fight Night: Smith vs. Teixeira was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on May 13, 2020 at VyStar Veterans Memorial Arena in Jacksonville, Florida, United States.

UFC on ESPN: Overeem vs. Harris was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on May 16, 2020 at VyStar Veterans Memorial Arena in Jacksonville, Florida, United States. It was originally planned to take place as a Fight Night on ESPN+ at Pechanga Arena in San Diego, California. Due to the COVID-19 pandemic, UFC president Dana White announced on April 9 that starting with UFC 249, all future events were indefinitely postponed (see section below). On April 24, the event was confirmed for Jacksonville on its original date.

The 2021 World Junior Ice Hockey Championships were the 45th edition of the Ice Hockey World Junior Championship. It began on December 25, 2020, and ended with the gold medal game on January 5, 2021. This marks the 14th time that Canada hosts the WJIHC. Due to the COVID-19 pandemic in Canada, it was hosted behind closed doors in Edmonton, Alberta, with no spectators admitted for any game.