Laos competed at the 2004 Summer Olympics in Athens, Greece, from 13 to 29 August 2004. This was the nation's sixth appearance at the Olympics, having attended every edition of the Olympiad since 1980 except the 1984 Summer Olympics in Los Angeles, because of the Soviet boycott.
Barbados competed at the 2004 Summer Olympics in Athens, Greece, from 13 to 29 August 2004. This nation marked its ninth appearance at the Olympics, except the 1980 Summer Olympics in Moscow because of the United States boycott.
Liberia competed at the 2012 Summer Olympics in London, United Kingdom from 27 July to 12 August 2012. This was the nation's eleventh appearance at the Olympics since its debut in 1956.
Lesotho competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's eleventh appearance at the Summer Olympics, with the exception of the 1976 Summer Olympics in Montreal, because of its partial support to the African boycott.
Namibia competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's seventh consecutive appearance at the Summer Olympics.
Antigua and Barbuda competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's tenth appearance at the Summer Olympics.
Zambia competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's thirteenth appearance at the Summer Olympics, although it marked its official debut in 1964 under the name Northern Rhodesia. Zambia missed the 1976 Summer Olympics in Montreal, because of its partial support to the African boycott.
Grenada competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's ninth consecutive appearance at the Summer Olympics.
Barbados competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's twelfth appearance at the Summer Olympics, with the exception of the 1980 Summer Olympics in Moscow, because of its partial support to the United States-led boycott.
Saint Lucia 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.
Guyana competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's seventeenth appearance at the Summer Olympics as an independent state, although it had previously represented in five other editions under the name British Guiana. Guyana joined the African-led boycott of the 1976 Summer Olympics in Montreal.
The British Virgin Islands competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's ninth consecutive appearance at the Summer Olympics.
Saint Vincent and the Grenadines competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's eighth consecutive appearance at the Summer Olympics.
Ghana competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's fourteenth appearance at the Summer Olympics, having taken part in all but three editions since its debut at the 1952 Summer Olympics. Ghana did not attend the 1976 Olympics because of the African boycott and did not attend the 1980 Olympics because of the United States boycott.
Belize competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. It was the nation's twelfth appearance at the Olympic Games, although it had previously appeared in two early editions under the name "British Honduras". Belize joined the United States-led boycott of the 1980 Summer Olympics hosted in Moscow, Russia. The delegation included two track and field athletes: Brandon Jones and Katy Sealy, as well as judoka Renick James. All three athletes made their Olympic debut. Belize Olympic and Commonwealth Games Association appointed 200 metres sprinter Brandon Jones to carry the nation's flag in the opening ceremony. Belize, however, has yet to win its first Olympic medal.
Suriname competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's thirteenth appearance at the Summer Olympics.
Monaco competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. Since the nation's official debut in 1920, Monegasque athletes have appeared in every edition of the Summer Olympic Games throughout the modern era, except for three occasions. Monaco did not attend the 1932 Summer Olympics in Los Angeles at the period of the worldwide Great Depression, failed to register any athletes at the 1956 Summer Olympics in Melbourne, and also joined the United States-led boycott when Moscow hosted the 1980 Summer Olympics.
Malawi competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's tenth appearance at the Summer Olympics. Malawi did not attend the 1976 Summer Olympics in Montreal and the 1980 Summer Olympics in Moscow, because of its support to the African and United States-led boycott.
Sierra Leone competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's eleventh appearance at the Summer Olympics since its debut in 1968, except for two occasions. Sierra Leone failed to register any athletes at the 1972 Summer Olympics in Munich, and also joined the rest of the African nations to boycott the 1976 Summer Olympics in Montreal.
American Samoa competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's eighth consecutive appearance at the Summer Olympics.
