Moldova, officially the Republic of Moldova, competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's sixth consecutive appearance at the Summer Olympics in the post-Soviet era.
Poland 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 1924, Polish athletes have appeared in every edition of the Summer Olympic Games, with the exception of the 1984 Summer Olympics in Los Angeles, because of the Soviet boycott.
Finland 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. Finnish athletes have appeared in every edition of the Summer Olympic Games since the nation's official debut in 1908. Finland left the 2020 Summer Olympics with only two bronze medals, having yet to earn a single Gold medal since the 2008 Summer Olympics.
Greece 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. Greek athletes have competed in every Summer Olympic Games of the modern era, alongside Australia, France, Great Britain, and Switzerland. As the progenitor nation of the Olympic Games and in keeping with tradition, Greece entered first at the New National Stadium during the parade of nations at the opening ceremony. Like the other closing ceremonies before, the Greek flag was also raised during the closing ceremony alongside the Japanese and French flags.
Uzbekistan 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 seventh consecutive appearance at the Summer Olympics in the post-Soviet era.
Lithuania 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 Games in the post-Soviet era and tenth overall in Summer Olympic history.
Slovakia 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 seventh consecutive appearance at the Summer Olympics after gaining its independence from the former Czechoslovakia.
Ukraine 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 worldwide COVID-19 pandemic. It was the nation's seventh consecutive appearance at the Summer Olympics in the post-Soviet era with its smallest representation ever.
Bulgaria 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. Bulgarian athletes have appeared in every edition of the Summer Olympics since 1924, except for three occasions: the 1948 Summer Olympics in London, and the 1932 and 1984 Summer Olympics in Los Angeles because of Bulgaria's actions in World War II and the worldwide Great Depression and Soviet boycott, respectively.
Chile 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 debut in 1896, Chilean athletes have appeared in all but five editions of the Summer Olympics of the modern era. Chile did not attend the 1932 Summer Olympics in Los Angeles at the period of the worldwide Great Depression and was also part of the US-led boycott, when Moscow hosted the 1980 Summer Olympics.
Cuba 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. The Cuban delegation was their smallest since 1964, which coincidentally was also in Tokyo. It was the nation's twenty-first appearance at the Summer Olympics. Cuba improved on its 2016 result, by winning 7 gold and 15 total medals after 5 and 11 in Rio.
Colombia 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 twentieth appearance at the Summer Olympics, with the exception of Helsinki 1952.
The Czech Republic 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 seventh consecutive appearance at the Summer Olympics after splitting from the former Czechoslovakia.
Iran 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. Since the nation's return in 1948 after having made their debut in 1900, Iranian athletes have attended every edition of the Summer Olympic Games, with the exception of 1980 and 1984 which they boycotted.
Mongolia 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 debut in 1964, Mongolian athletes have appeared in every edition of the Summer Olympic Games, with the exception of the 1984 Summer Olympics in Los Angeles, because of its support of the Soviet boycott.
Romania 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 participation started in 1900, Romanian athletes have appeared in every edition of the Summer Olympic Games, except for two occasions: the 1932 Summer Olympics in Los Angeles at the period of the worldwide Great Depression, and the 1948 Summer Olympics in London.
Kazakhstan 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 seventh consecutive appearance at the Summer Olympics in the post-Soviet era.
Latvia 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 Games and twelfth overall in Summer Olympic history.
Kyrgyzstan 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 seventh consecutive appearance at the Summer Olympics in the post-Soviet era.
Tunisia 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. Since the nation's official debut in 1960, Tunisian athletes have appeared in every edition of the Summer Olympic Games, except the 1980 Summer Olympics in Moscow because of the nation's partial support for the US-led boycott.
Russian Empire (1900–1912)
Romania (1924–1936)
Soviet Union (1952–1988)
Unified Team (1992)
