
The archery events at the 2020 Summer Olympics in Tokyo took place in Yumenoshima Park. Five events were planned with a mixed team event staged for the first time.

Artistic swimming competitions at the 2020 Summer Olympics in Tokyo, Japan featured a total of 104 athletes competing in two medal events, namely the women's duet and the women's team..

Athletics at the 2020 Summer Olympics were held during the last ten days of the Games. They were due to be held from 31 July – 9 August 2020, at the Olympic Stadium in Tokyo, Japan. Due to the COVID-19 pandemic, the games were postponed to 2021, with the track and field events set for 30 July – 8 August. The sport of athletics at these Games was split into three distinct sets of events: track and field events, remaining in Tokyo, and road running events and racewalking events, moved to Sapporo. A total of 48 events were held, one more than in 2016, with the addition of a mixed relay event.

The badminton tournaments at the 2020 Summer Olympics in Tokyo took place between 24 July and 2 August 2021. A total of 172 athletes competed in five events: men's singles, men's doubles, women's singles, women's doubles, and mixed doubles.

Baseball was featured at the 2020 Summer Olympics, in Tokyo, for the first time since the 2008 Summer Olympics. Six national teams competed in the tournament: Israel, Japan (host), Mexico, South Korea, the United States, and the Dominican Republic.

Basketball at the 2020 Summer Olympics in Tokyo, Japan was held from 24 July to 8 August 2021. The basketball competitions were held at the Saitama Super Arena in Saitama, while the 3x3 competitions were held at the temporary Aomi Urban Sports Park in Tokyo.

The boxing tournaments at the 2020 Summer Olympics in Tokyo took place from 24 July to 8 August 2021 at the Ryōgoku Kokugikan. Thirteen events were staged, the same number as in London in 2012 and Rio de Janeiro in 2016. However, for the first time since the London Games, the programme has been updated, with the number of men's events reduced by two and the number of women's events increased by the same number.

Canoeing at the 2020 Summer Olympics in Tokyo was contested in two main disciplines: canoe slalom, to take place from 25 to 30 July 2021, and canoe sprint, from 2 to 7 August. The slalom competitions will be held at the Kasai Canoe Slalom Course; whereas the sprint events will be staged at Sea Forest Waterway.

The diving competitions at the 2020 Summer Olympics in Tokyo featured eight events. It was one of four aquatic sports at the Games, along with swimming, water polo, and synchronised swimming.

The fencing competitions at the 2020 Summer Olympics in Tokyo featured 12 events, the first time that both team and individual events have been held in all three weapons for both men and women.

Field hockey at the 2020 Summer Olympics in Tokyo took place from 24 July to 6 August 2021 at the Oi Seaside Park. Twenty-four teams competed in the tournament.

The association football tournament at the 2020 Summer Olympics was held from 21 July to 7 August 2021 in Japan.

Golf at the 2020 Summer Olympics in Tokyo, Japan featured two events, individual competitions for men and women.

Gymnastics at the 2020 Summer Olympics in Tokyo was held in three categories: artistic gymnastics, rhythmic gymnastics and trampolining. After months of waiting due to the COVID-19 pandemic, the Summer Olympics were finally held in Tokyo 2021 at the Olympic Gymnastic Centre. Spectators were unable to attend, making this the smallest Olympic crowd. "After waves of the COVID-19 pandemic, multiple pleas for cancellation, a recent surge of coronavirus cases in Japan, and an official name that went out of date, the delayed 2020 Tokyo Olympics are finally on. "

The handball tournaments at the 2020 Summer Olympics took place from 24 July to 8 August 2021 at Yoyogi National Gymnasium in Tokyo.

Judo at the 2020 Summer Olympics in Tokyo featured around 393 judoka competing in 15 events, seven each for both men and women as well as a new mixed team event. The 2020 Summer Olympics were postponed due to the COVID-19 pandemic, and the judo competitions were held in July 2021 at Nippon Budokan.

The modern pentathlon at the 2020 Summer Olympics in Tokyo took place in 2021 at Musashino Forest Sport Plaza and Ajinomoto Stadium.

The rowing competitions at the 2020 Summer Olympics in Tokyo took place between 23 and 30 July 2021 at the Sea Forest Waterway in Tokyo Bay. Fourteen medal events were contested by 526 athletes.

Rugby sevens at the 2020 Summer Olympics in Tokyo took place from 26 July to 31 July 2021 at the Tokyo Stadium. 24 teams competed in the tournament. The dates were modified due to the postponement of the Tokyo 2020 games as a result of the COVID-19 pandemic.

Sailing competitions at the 2020 Summer Olympics in Tokyo took place from 25 July to 4 August 2021 at the Enoshima Yacht Harbor in Enoshima. The venue was also used for the 1964 Olympic Games although significantly regenerated, the IOC now encouraging regeneration, cost reductions and sustainability. The RS:X, Laser, Laser Radial, Finn, 470, 49er, 49erFX, and Nacra17 are all returning for 2020; there are no significant changes to the Olympic programme from 2016.

Shooting competitions at the 2020 Summer Olympics in Tokyo were originally scheduled from 25 July to 3 August 2020, due to the postponement of the Summer Olympics to 2021, the rescheduled dates will be on 24 July to 2 August 2021 at the Asaka Shooting Range. Unlike in 2016, the number of shooters competing across fifteen events at these Games has been reduced from 390 to 360, with an equal distribution between men and women. Furthermore, several significant changes were instituted in the Olympic shooting program, including the substitution of three male-only events, with the mixed team competitions.

Skateboarding at the 2020 Summer Olympics was an event held in the 2020 Summer Olympics in Tokyo, Japan. It was the debut appearance of skateboarding at the Summer Olympics. Skateboarding was one of four new sports added to the Olympic program for 2020; it is also provisionally approved for the 2024 Summer Olympic games. The proposal to add skateboarding to the Olympics was approved in August of 2016.

Softball was featured at the 2020 Summer Olympics in Tokyo for the first time since the 2008 Summer Olympics. The tournament consisted of six teams. Baseball/softball was one of five sports added to the program of the 2020 Summer Olympics only. The first six opening round games were played at Fukushima Azuma Baseball Stadium in an effort to highlight Fukushima's recovery from the 2011 Fukushima Daiichi nuclear disaster, while the remaining games were played at Yokohama Stadium. Softball will not return in 2024.

Sport climbing made its Olympic debut at the 2020 Summer Olympics in Tokyo, Japan. Two events were held, one each for men and women. The format controversially consisted of one combined event with three disciplines: lead climbing, speed climbing and bouldering. The medals were determined based on best performance across all three disciplines. This format was previously tested at the 2018 Summer Youth Olympics. The Olympic code for sports climbing is CLB.

Surfing at the Summer Olympics made its debut in the 2020 Summer Olympics in Tokyo, Japan. The Olympics was originally scheduled to be held in 2020, but was postponed to 2021 as a result of the COVID-19 pandemic.

The swimming competitions at the 2020 Summer Olympics in Tokyo were due to take place from 25 July to 6 August 2020 at the Olympic Aquatics Centre. Due to the COVID-19 pandemic, the games have been postponed to 2021. However, their official name remained 2020 Summer Olympics with swimming events set for 24 July–1 August 2021 and marathon swimming set for 4–5 August 2021.

Table tennis at the 2020 Summer Olympics in Tokyo featured 173 table tennis players. Table tennis had appeared at the Summer Olympics on eight previous occasions beginning with the 1988 Summer Olympics.

Taekwondo at the 2020 Summer Olympics in Tokyo featured 128 taekwondo fighters competing in eight weight categories; four for men, and four for women. The 2020 Olympics were postponed to 2021 due to the COVID-19 pandemic.

Tennis at the 2020 Summer Olympics in Tokyo was held between 24 July and 1 August 2021 at the Ariake Tennis Park.

The triathlon competitions at the 2020 Summer Olympics in Tokyo featured fifty-five athletes competing in each of the men's and women's events. The 2020 Olympics were postponed to 2021 due to the COVID-19 pandemic. It also added the new mixed team relay event.

The volleyball tournaments at the 2020 Summer Olympics in Tokyo were played between 24 July and 8 August 2021. 24 volleyball teams and 48 beach volleyball teams participated in the tournament. The indoor volleyball competition took place at Ariake Arena in Ariake, and the beach volleyball tournament at Shiokaze Park, in the temporary Shiokaze Park Stadium.

The water polo tournaments at the 2020 Summer Olympics took place at the Tokyo Tatsumi International Swimming Center in Kōtō. Twenty-two teams competed in the tournament, an increase of two from the previous editions. Water polo was also the last sport played before the closing ceremony.

The weightlifting at the 2020 Summer Olympics in Tokyo took place in 2021 at Tokyo International Forum.

Wrestling at the 2020 Summer Olympics in Tokyo featured two disciplines, freestyle and Greco-Roman, which were further divided into different weight categories. Men competed in both disciplines whereas women only participated in the freestyle events, with 18 gold medals awarded. Wrestling had been contested at every modern Summer Olympic Games, except Paris 1900.