Austria competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place from 24 July to 9 August 2020, the Olympic Games were postponed to 23 July to 8 August 2021, because of the COVID-19 pandemic. It was the nation's twenty-eighth appearance at the Summer Olympics.
Japan competed as the host nation of the 2020 Summer Paralympics in their capital Tokyo from 24 August to 5 September 2021.
Great Britain competed in the 2020 Summer Paralympics in Tokyo, Japan. Originally scheduled to take place between 21 August and 6 September 2020, the Games were postponed to 24 August to 5 September 2021 as a result of the COVID-19 pandemic. British athletes have competed at all sixteen consecutive Summer Paralympics since 1960.
China competed at the 2020 Summer Paralympics in Tokyo, Japan from 24 August to 5 September 2021. This was their tenth consecutive appearance at the Summer Paralympics since 1984. China sent 251 athletes to the Games and competed in 20 of the 22 sports except Equestrian and Wheelchair rugby.
Athletics at the 2020 Summer Paralympics were to be held at the Tokyo National Stadium between 25 August and 6 September. Following the COVID-19 pandemic they have been rescheduled to between 24 August and 5 September 2021.
Germany competed at the 2020 Summer Paralympics in Tokyo, Japan, from 24 August to 5 September 2021. This was their sixteenth consecutive appearance at the Summer Paralympics since 1960.
Egypt competed at the 2020 Summer Paralympics in Tokyo, Japan from 25 August to 6 September. This was Egypt's thirteenth appearance at the Summer Paralympics.
Qualification for swimming at the 2020 Summer Paralympics begin on 1 October 2018 and finish on 31 January 2020. There are 340 male and 280 female athlete quotas in 146 swimming events.
Argentina competed in the 2020 Summer Paralympics in Tokyo, Japan from 24 August to 5 September 2021.
Turkey competed at the 2020 Summer Paralympics in Tokyo, Japan from 24 August to 5 September 2021. This was the country's seventh appearance in the past eight Games despite their absence in the 1996 Summer Paralympics.
Sweden competed at the 2020 Summer Paralympics in Tokyo, Japan, which took place from 24 August to 5 September 2021. This was their sixteenth consecutive appearance at the Summer Paralympics since 1960. The Swedish team consisted of 26 athletes in 11 sports.
Thailand competed at the 2020 Summer Paralympics from 24 August to 5 September 2021. This was the country's tenth appearance at the Paralympic Games.
Iran competed at the 2020 Summer Paralympics in Tokyo, Japan, from 24 August to 5 September 2021. This was their ninth consecutive appearance at the Summer Paralympics since 1988.
Nigeria competed at the 2020 Summer Paralympics in Tokyo, Japan, from 24 August and 5 September 2021. This was their eighth consecutive appearance at the Summer Paralympics since 1992.
France competed at the 2020 Summer Paralympics in Tokyo, Japan, from 24 August to 5 September 2021.
Poland competed at the 2020 Summer Paralympics in Tokyo, Japan, from 24 August to 5 September 2021.
Mexico participated at the 2020 Summer Paralympics in Tokyo, Japan, from 24 August to 5 September 2021. Originally scheduled to take place from 25 August to 6 September 2020, the Paralympics were postponed by a year in March 2020 due to the COVID-19 pandemic, with the rescheduled Games still referred to as Tokyo 2020 for marketing and branding purposes. It was the nation's thirteenth appearance at the Summer Paralympics.
Indonesia competed at the 2020 Summer Paralympics in Tokyo, Japan. Originally scheduled to take place in 2020, the Games were rescheduled for 24 August to 5 September 2021, due to the COVID-19 pandemic.
Hong Kong competed at the 2020 Summer Paralympics in Tokyo, Japan, from 24 August to 5 September 2021. These were the last games contested by Hong Kong under the Hong Kong Paralympic Committee and Sports Association for the Physically Disabled umbrella, before the organisation separated into two independent entities namely the Hong Kong Paralympic Committee and Hong Kong Sports Association for the Physically Disabled on 1 April 2022.
South Korea competed at the 2020 Summer Paralympics in Tokyo, Japan, from 24 August to 5 September 2021.
Darwin 
Alexandria 
Taichung 
Lima 
Helsingborg 
Laško 
