Judo at the 2020 Summer Olympics in Tokyo featured around 393, 128 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 United States competed at the 2016 Summer Paralympics in Rio de Janeiro, Brazil, from 7 September to 18 September 2016. The first places the team qualified were for three athletes in sailing events. They also qualified athletes in archery, goalball, shooting, swimming, and wheelchair basketball.
The Judo competition of the 2016 Summer Paralympics was held in Hall 3 at the Carioca Arena inside the Olympic Training Center in Barra cluster between 8 and 10 September. There were 13 events, corresponding to seven weight classes for men and six for women, and a total of 132 athletes will compete. At the Paralympics, judo is contested by visually impaired athletes.
China has qualified to send athletes to the 2016 Summer Paralympics in Rio de Janeiro, Brazil, from 7 September to 18 September 2016. Sports China competed in include blind football, archery, boccia, cycling, goalball, judo, paracanoeing, sitting volleyball and wheelchair basketball.
Hungary competed at the 2016 Summer Paralympics in Rio de Janeiro, Brazil, from 7 to 18 September 2016.
Mexico participated at the 2016 Summer Paralympics in Rio de Janeiro, Brazil, from 7 to 18 September 2016. The country sent a 71-member delegation to the Games.
A total of 393, 128 athletes could qualify for judo at the 2020 Summer Olympics. The 2020 Olympics were postponed to 2021 due to the COVID-19 pandemic. Each NOC could enter a maximum of 14 judokas. Host nation Japan has reserved a spot in each of all 14 events, while twenty are made available to NOCs through a Tripartite Commission Invitation.
Croatia competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place from 24 July to 9 August 2020, the Games were postponed to 23 July to 8 August 2021, because of the COVID-19 pandemic. It was the nation's eighth consecutive appearance at the Summer Olympics.
Goalball at the 2020 Summer Paralympics was held in the Makuhari Messe in Tokyo. The event was held from 25 August to 3 September 2021.
Serbia competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place from 24 July to 9 August 2020, the Games were postponed to 23 July to 8 August 2021, due to the COVID-19 pandemic. It was the nation's fifth appearance at the Summer Olympics as an independent nation.
Japan competed as the host nation of the 2020 Summer Paralympics in their capital Tokyo from 24 August to 5 September 2021.
Wheelchair tennis at the 2020 Summer Paralympics in Tokyo, Japan took place at the Ariake Tennis Park from 27 August to 4 September 2021.
Algeria competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place in the summer of 2020, the Games were postponed to 23 July to 8 August 2021, because of the COVID-19 pandemic. Since the nation's debut in 1964, Algerian athletes have appeared in every edition of the Summer Olympic Games, with the exception of the 1976 Summer Olympics in Montreal because of the African boycott. Unlike Algeria's previous successes in the Summer Olympics, they failed to secure a single medal.
Argentina competed in the 2020 Summer Paralympics in Tokyo, Japan from 24 August to 5 September 2021.
Brazil competed at the 2020 Summer Paralympics in Tokyo, Japan from 24 August to 5 September 2021.
Libya competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place from 24 July to 9 August 2020, the Games were postponed to 23 July to 8 August 2021, because of the COVID-19 pandemic. It was the nation's twelfth appearance at the Summer Olympics since its debut at the 1964 Summer Olympics in Tokyo; seven of them were represented by the Libyan athletes under the name Libyan Arab Jamahiriya.
The Democratic Republic of the Congo competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place from 24 July to 9 August 2020, the Games were postponed to 23 July to 8 August 2021, because of the COVID-19 pandemic. It was the nation's eleventh consecutive appearance at the Summer Olympics, although it had previously competed in four editions under the name Zaire.
Haiti competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place from 24 July to 9 August 2020, the Games were postponed to 23 July to 8 August 2021, because of the COVID-19 pandemic. It was the nation's seventeenth appearance at the Summer Olympics since its debut in 1900.
South Korea competed at the 2020 Summer Paralympics in Tokyo, Japan, from 24 August to 5 September 2021.
Nicaragua competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place from 24 July to 9 August 2020, the Games were postponed to 23 July to 8 August 2021, because of the COVID-19 pandemic. It was the nation's fourteenth appearance at the Summer Olympics, having competed at every Games since 1968 with the exception of the 1988 Summer Olympics in Seoul because of its partial support of the North Korean boycott.
