Luxembourg 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, Luxembourg athletes have appeared in every edition of the Summer Olympic Games, with the exception of the 1904 and 1908 Summer Olympics, and the 1932 Summer Olympics in Los Angeles at the period of the worldwide Great Depression.
Venezuela competed at the 2024 Summer Olympics in Paris from 26 July to 11 August 2024. It was the nation's twentieth consecutive appearance at the Summer Olympics.
Chile competed at the 2024 Summer Olympics in Paris from 26 July to 11 August 2024. 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 2024 Summer Olympics in Paris from 26 July to 11 August 2024. It was the nation's twenty-second appearance at the Summer Olympics. The 2024 Cuban delegation was smaller than their 2020 delegation, which was previously their smallest delegation since 1964. It was also the second time since 1964 that the Cuban delegation had fewer than one hundred athletes.
Switzerland competed at the 2024 Summer Olympics in Paris from 26 July to 11 August 2024. Swiss athletes have appeared in every Summer Olympic Games edition of the modern era, except for a partial boycott of Melbourne 1956 in protest of the Soviet invasion of Hungary.
Norway competed at the 2024 Summer Olympics in Paris from 26 July to 11 August 2024. Norwegian athletes have appeared in every edition of the Summer Olympic Games, except for the 1980 Summer Olympics in Moscow because of the country's support for the United States-led boycott.
Ecuador competed at the 2024 Summer Olympics in Paris from 26 July to 11 August 2024. It was the nation's sixteenth appearance at the Summer Olympics and, in terms of number of medals, its most successful one.
Slovakia competed at the 2024 Summer Olympics in Paris from 26 July to 11 August 2024. It was the nation's eighth consecutive appearance at the Summer Olympics after gaining its independence from the former Czechoslovakia.
Belgium competed at the 2024 Summer Olympics in Paris from 26 July to 11 August 2024. Since the country's debut in 1900, Belgian athletes have appeared in every edition of the Summer Olympic Games except for the 1904 edition.
South Korea, officially the Republic of Korea, competed at the 2024 Summer Olympics in Paris from 26 July to 11 August 2024. It was the nation's nineteenth appearance at the Summer Olympics.
Kingdom of Thailand competed at the 2024 Summer Olympics in Paris. It is taking place from 26 July to 11 August 2024. It signified the nation's participation in every edition of the Summer Olympics, since the official debut at 1952, except for the 1980 Summer Olympics in Moscow, because of its support of the US-led boycott.
Austria competed at the 2024 Summer Olympics in Paris from 26 July to 11 August 2024. It was the nation's twenty-ninth appearance at the Summer Olympics, except for Antwerp 1920, due to the nation's role in World War I.
Finland competed at the 2024 Summer Olympics in Paris from 26 July to 11 August 2024. It signifies the nation's participation in every single edition at the Summer Olympics, since the nation's official debut in 1908.
Portugal competed at the 2024 Summer Olympics in Paris from 26 July to 11 August 2024. It was the 26th consecutive participation of the nation in the Summer Olympic Games since their debut at the 1912 Summer Olympics in Stockholm.
Hong Kong, competing as "Hong Kong, China" competed at the 2024 Summer Olympics in Paris from 26 July to 11 August 2024. It was the territory's eighteenth appearance at the Summer Olympics since its debut as a British colony in 1952, and the seventh appearance at the Summer Olympics since the sovereignty of Hong Kong was returned to the People's Republic of China (PRC) in 1997.
Kazakhstan competed at the 2024 Summer Olympics in Paris from 26 July to 11 August 2024. It was the nation's eighth consecutive appearance at the Summer Olympics in the post-Soviet era.
Latvia competed at the 2024 Summer Olympics in Paris from 26 July to 11 August 2024. It was the nation's ninth consecutive appearance at the Games.
Mongolia competed at the 2024 Summer Olympics in Paris from 26 July to 11 August 2024. 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.
Panama competed at the 2024 Summer Olympics in Paris from 26 July to 11 August 2024. It was the nation's nineteenth appearance at the Summer Olympics, since its debut in 1928.
Mauritius competed at the 2024 Summer Olympics in Paris from 26 July to 11 August 2024. It was the nation's eleventh consecutive appearance at the Summer Olympics, having appeared in every Summer Games since its official debut in 1984.
