Afghanistan first competed at the Paralympic Games during the 1996 Summer Paralympics in Atlanta, where it was represented by cyclists Gul Afzal and Zabet Khan.
Yeldos Smetov is a Kazakh judoka and Olympic champion in 2024 in the under 60 kg weight category. He won gold medals at the 2014 Asian Games and the 2015 World Judo Championships, a silver medal at the 2016 Olympics, a bronze medal at the 2020 Olympics in Tokyo and a gold medal at the 2024 Olympics in Paris.
Mokhtar Al-Yamani is a Yemeni swimmer. He competed in the men's 100 metre freestyle event at the 2017 World Aquatics Championships. In 2018, he represented Yemen at the 2018 Asian Games held in Jakarta, Indonesia. In 2021, he competed in the men's 100 metre and 200 metre freestyle at the 2020 Summer Olympics in Tokyo, Japan.
David Andrew Liti is a New Zealand weightlifter, who won the gold medal in the +105 kg event at the 2018 Commonwealth Games. His total lift of 403 kg was a Commonwealth Games record.
The men's handball tournament at the 2020 Summer Olympics was the 14th edition of the handball event for men at the Summer Olympic Games. It was held from 24 July to 7 August 2021. All games were played at the Yoyogi National Gymnasium in Tokyo, Japan.
India competed at the 2020 Summer Olympics in Tokyo, Japan. Originally scheduled to take place in July–August 2020, the games were postponed to 23 July to 8 August 2021, due to the COVID-19 pandemic. The Games marked the nation's 25th appearance at the Summer Olympics after having made its official debut at the 1900 Summer Olympics.
Kuwait 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 thirteenth appearance at the Summer Olympics, although it competed under the Independent Olympic Athletes at the previous Games in 2016, resulting to the country's suspension by the International Olympic Committee for government interference.
Ignacio Mendy is an Argentine rugby union player who plays for the Benetton. He made his debut appearance at the Olympics representing Argentina at the 2020 Summer Olympics. His playing position is fullback.
The men's tournament of water polo at the 2020 Summer Olympics at Tokyo, Japan began on 25 July and ended on 8 August 2021. It was held at the Tokyo Tatsumi International Swimming Center. It was the 27th official appearance of the tournament, which was not held in 1896 and was a demonstration sport in 1904 but otherwise had been held at every Olympics.
Djibouti 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. This was the nation's ninth appearance at the Summer Olympics; Djibouti did not field any athletes at the 2004 Summer Olympics in Athens. The delegation consisted of four athletes, three men and one women, competing in five events across three sports. Two athletes participated in the judo and swimming tournaments: Aden-Alexandre Houssein and Houssein Gaber Ibrahim. Athlete Ayanleh Souleiman, a returning competitor from the 2016 Rio Olympics competed in the men's 800 metres and 1500 metres events. Souhra Ali Mohamed, who had previously participated in the 2012 Summer Olympics competed in the women's 1500 metres event. Houssein lead the Djiboutian squad as the flagbearer in the opening ceremony with Souhra being the flagbearer for the closing ceremony.
Mirazizbek Mirzakhalilov is an Uzbek professional boxer. As an amateur, he won a gold medal at the 2019 World Championships, 2019 Asian Championships, and 2018 Asian Games.
Jordan competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place during the summer of 2020, the Games were postponed to 23 July to 8 August 2021, because of the COVID-19 pandemic. It was the nation's 11th consecutive appearance at the Summer Olympics.
American Samoa competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place from July 24 to August 9, 2020, the Games were postponed to July 23 to August 8, 2021, because of the COVID-19 pandemic. The country's participation in Tokyo marked its ninth consecutive appearance in the Summer Olympics since its debut in the 1988 Summer Olympics.
Mohammad Reza Geraei, is an Iranian Greco-Roman wrestler. At the 2020 Summer Olympics held in Tokyo, Japan, he won the gold medal in the men's 67 kg event. In 2018, he won one of the bronze medals in the men's 67 kg event at the Asian Games held in Jakarta, Indonesia.
Mohammad Hadi Saravi Darkolaei is an Iranian Greco-Roman wrestler. He won the gold medal in the 97 kg event at the 2021 World Wrestling Championships held in Oslo, Norway. He also won one of the bronze medals in the 97 kg event at the 2020 Summer Olympics held in Tokyo, Japan. In 2020, he won the gold medal in his event at the Asian Wrestling Championships held in New Delhi, India. He also won the gold medal in the 97 kg event at the 2024 Summer Olympics held in Paris, France.
Saint Kitts and Nevis competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place from 24 July to 9 August 2020, the event was postponed to 23 July to 8 August 2021, because of the COVID-19 pandemic. This was the nation's seventh appearance at the Summer Olympics since their debut in 1996. The delegation consisted of two athletes, competing in athletic events; Jason Rogers and Amya Clarke. For the first time, in an effort to promote gender equality, two flagbearers, one male and one female were allowed at the Olympics. Both athletes from Saint Kitts and Nevis bore the national flag at the opening ceremony. Saint Kitts and Nevis did not win any medals during the Tokyo Olympics. Rogers ranked third in the first round of the men's 100 metres and advanced to the semifinals where he was eliminated. Clarke also ranked third in her preliminary round of the women's 100 metres and advanced to round 1 where she ranked 7th and was eliminated.
Abdelrahman Al-Masatfa is a Jordanian karateka. He won one of the bronze medals in the men's 67 kg event at the 2020 Summer Olympics held in Tokyo, Japan. He is also a three-time medalist at the Asian Games and an eight-time medalist, including three gold medals, at the Asian Karate Championships.
Nguyễn Văn Đương is a Vietnamese amateur boxer. He won a silver medal at the 2019 Southeast Asian Games and later qualified for the 2020 Summer Olympics.
The Marshall Islands 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 fourth appearance at the Summer Olympics since its debut in 2008. The delegation consisted of two athletes, one man and one women, competing in two events in swimming. Swimmer Phillip Kinono competed in the men's 50 metre freestyle. Colleen Furgeson, a returning competitor from the 2016 Rio Olympics competed in the women's 100 metre freestyle. For the first time, in an effort to promote gender equality, two flagbearers, one male and one female were allowed at the Olympics. Furgeson and Kinono lead the Marshall Islands squad as the flagbearers in the opening ceremony. The Marshall Islands, however, has yet to win its first ever Olympic medal.
Manuel Frigo is an Italian swimmer. As part of the men's 4 × 100 metre freestyle relay team, he won silver in the 2020 Summer Olympics and bronze at the 2024 Summer Olympics.
