Vincent Charles Hancock is an American shooter and Olympian who won the gold medal in the men's skeet at the 2008 Summer Olympics in Beijing, 2012 Summer Olympics in London and 2020 Summer Olympics in Tokyo. He is the first skeet shooter to repeat as the Olympic champion.
María Belén Pérez Maurice is an Argentinian sabre fencer who was Pan American champion in 2014. She was the only representative of the sport from Argentina at the 2012 Summer Olympics in London, the 2016 Summer Olympics in Rio, and the 2020 Summer Olympics in Tokyo.
Mostafa Hamdy is an Egyptian sport shooter. He competed in the men's skeet event at the Summer Olympics in 1996, 2000, 2004, 2012, and 2020.
Azmy Mehelba is an Egyptian sport Olympic shooter, who began shooting at age 11. He was selected to join the Egyptian national men skeet shooting team by the age of 14 and participated in his first international competition at age 15.
Federico Matias Vieyra is an Argentine handball player for Handball Sassari and the Argentina men's national handball team.
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 were 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 had 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.
Melisa Gil is an Argentine sports shooter. She competed in the women's skeet event at the 2016 Summer Olympics where she placed eighth. She qualified to represent Argentina again at the 2020 Summer Olympics in the women's skeet event.
Lucía Falasca is an Argentine competitive sailor.
Paul Adams is an Australian sports shooter. He competed in the men's skeet event at the 2016 Summer Olympics and at the 2018 Commonwealth Games. Adams represented Australia at the 2020 Summer Olympics in Tokyo, Japan. He competed in the men's skeet event but did not score sufficient points to advance past qualification.
Santiago Grassi is an Argentine swimmer. He competed at the 2016 Summer Olympics in the men's 100 metre butterfly; his time of 52.56 seconds in the heats did not qualify him for the semifinals. He represented Argentina again at the 2020 Summer Olympics in the men's 100 metre butterfly event.
Argentina 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. Since the nation's official debut in 1900, Argentine athletes have competed in every edition of the Summer Olympic Games, except the 1904 Summer Olympics in St. Louis, the 1912 Summer Olympics in Stockholm, and the 1980 Summer Olympics in Moscow because of their support for the United States-led boycott.
Italy 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. Italian athletes have appeared in every Summer Olympics edition of the modern era, with the disputed exception of the 1904 Summer Olympics in St. Louis where one Italian may have participated.
Sweden 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. Swedish athletes have competed at every Summer Olympic Games, with the exception of the 1904 Summer Olympics in St. Louis.
The United States of America (USA), represented by the United States Olympic & Paralympic Committee (USOPC), competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place in the summer of 2020, the Games were postponed to July 23 to August 8, 2021, due to the COVID-19 pandemic. U.S. athletes have appeared in every Summer Olympic Games of the modern era, with the exception of the 1980 Summer Olympics in Moscow, which the U.S. boycotted. The opening ceremony flag-bearers for the United States were baseball player Eddy Alvarez and basketball player Sue Bird. Javelin thrower Kara Winger was the flag-bearer for the closing ceremony. For the third consecutive time in the Summer Olympics, the United States was represented by more female than male athletes (285 men and 330 women).
Lucas Lautaro Guzmán is an Argentine taekwondo athlete. He won a bronze medal at the 2019 World Taekwondo Championships on the men's flyweight category.
Puerto Rico 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 territory's nineteenth consecutive appearance at the Summer Olympics. Like on the 2016 Summer Olympics, Puerto Rico left the Olympics with a single gold medal, this time won by Jasmine Camacho-Quinn. Other athletes fell short of their Olympic medal, with Steven Piñeiro finishing sixth in the men's skateboarding street park final, and table tennis player Adriana Díaz losing a match in the third round.
Bahrain 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. It was the nation's tenth consecutive appearance at the Summer Olympics.
Juan Ramon Schaeffer is a Guatemalan sport shooter. In 2019, he won the silver medal in the men's skeet event at the 2019 Pan American Games held in Lima, Peru.
Dimitris Konstantinou is a Cypriot sport shooter. He competed in the men's skeet event at the 2020 Summer Olympics.
