Kenya competed at the 2004 Summer Olympics in Athens, Greece, from 13 to 29 August 2004. This was the nation's eleventh appearance at the Olympics, except the 1976 Summer Olympics in Montreal and the 1980 Summer Olympics in Moscow because of the African and United States boycott.
Portugal competed at the 2012 Summer Olympics, held in London, from 27 July to 12 August 2012. The nation celebrated its centennial anniversary participating in the Olympics, having participated at every Summer edition since 1912. The Olympic Committee of Portugal sent a total of 77 athletes to the Games, 45 men and 32 women, to compete in 13 sports. Despite having the same number of athletes as in Beijing, Portugal did not qualify any athletes in archery, fencing and taekwondo.
Algeria competed at the 2012 Summer Olympics in London, United Kingdom, from 27 July to 12 August 2012. This was the nation's twelfth consecutive appearance at the Summer Olympics, except for the 1976 Summer Olympics in Montreal because of the African boycott.
Zimbabwe competed at the 2012 Summer Olympics in London, UK from 27 July to 12 August 2012. This was the nation's ninth consecutive appearance at the Olympics, after gaining its independence from the former Rhodesia.
Morocco competed at the 2012 Summer Olympics in London, from 27 July to 12 August 2012. It was the nation's thirteenth appearance at the Olympics, having not participated at the 1980 Summer Olympics in Moscow because of its support of the United States boycott.
Panama competed at the 2012 Summer Olympics in London, from 27 July to 12 August 2012. This was the nation's sixteenth appearance at the Olympics since its debut in 1920. Panama did not compete on four occasions, including the 1980 Summer Olympics in Moscow, because of its partial support of the United States boycott.
Sudan competed at the 2012 Summer Olympics in London, from 27 July to 12 August 2012. This was the nation's eleventh appearance at the Olympics, since its debut in 1960. Sudan, however, did not attend the 1976 Summer Olympics in Montreal and the 1980 Summer Olympics in Moscow because of the African and the United States boycott.
Ethiopia competed at the 2012 Summer Olympics in London, from 27 July to 12 August 2012. This was the nation's twelfth appearance at the Olympics, having missed three occasions because of the African, Soviet, and North Korean boycott. The Ethiopian Olympic Committee sent a total of 35 athletes to the Games, 18 men and 17 women, to compete only in athletics, specifically in the middle and long-distance running events, and swimming, the nation's Olympic debut.
Uganda competed at the 2012 Summer Olympics in London, which was held from 27 July to 12 August 2012. The country's participation there marked its 13th appearance in the Summer Olympics since its début at the 1956 Summer Olympics. The delegation consisted of eleven track and field athletes that included Moses Ndiema Kipsiro, Benjamin Kiplagat, and Stephen Kiprotich, one each in badminton and weightlifting, and two swimmers. Ekiring, Ssekyaaya, Mugula, and Lunkuse had qualified through wildcard places, while the rest of the delegation satisfied the Games' qualification standards for their respective events. Mugula was selected as the team captain. Mugula was also selected as the flag bearer for both the opening and closing ceremonies. The country's best result at these Games was a gold medal for Kiproitch in the men's marathon, its first such medal since the 1972 Munich Olympics.
Tanzania competed at the 2012 Summer Olympics in London, United Kingdom from 27 July to 12 August 2012. This was the nation's twelfth appearance at the Olympics. Tanzania did not compete at the 1976 Summer Olympics in Montreal, because of the African boycott.
Bosnia and Herzegovina competed at the 2012 Summer Olympics in London, United Kingdom from 27 July to 12 August 2012. This was the nation's sixth appearance at the Summer Olympics.
Tunisia competed at the 2012 Summer Olympics in London, from 27 July to 12 August 2012. This was the nation's thirteenth appearance at the Olympics, having missed the 1980 Summer Olympics in Moscow because of its partial support for the United States boycott.
Burundi competed at the 2012 Summer Olympics in London, United Kingdom from 27 July to 12 August 2012. This was the nation's fifth appearance at the Olympics.
Ethiopia competed at the 2016 Summer Olympics in Rio de Janeiro, from 5 to 21 August 2016. The country's participation in Rio de Janeiro marked its thirteenth appearance at the Summer Olympics since its debut in 1956, having missed three occasions for joining the African (1976), Soviet (1984), and North Korean (1988) boycotts.
Kenya 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.
Botswana competed at the 2016 Summer Olympics in Rio de Janeiro, from 5 to 21 August 2016. This was the nation's tenth consecutive appearance at the Summer Olympics.
Bahrain competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This nation marked its ninth consecutive appearance at the Summer Olympics.
Uganda competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. Since the nation's official debut in 1956, Ugandan athletes have appeared in every edition of the Summer Olympic Games, with the exception of the 1976 Summer Olympics in Montreal because of its partial support of the African boycott.
Sudan 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.
Madagascar 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 1976 Summer Olympics in Montreal and the 1988 Summer Olympics in Seoul, because of the African and North Korean boycott, respectively.
