Saudi Arabia competed at the 2004 Summer Olympics in Athens, Greece, from 13 to 29 August 2004.
Mauritius competed at the 2000 Summer Olympics in Sydney, Australia.
Zambia competed at the 1996 Summer Olympics in Atlanta, United States.
Ivory Coast competed at the 2000 Summer Olympics in Sydney, Australia. Nine athletes competed in seven events and won zero medals.
Guinea competed at the 2000 Summer Olympics in Sydney, Australia.
Chad competed at the 2000 Summer Olympics in Sydney, Australia.
Haiti competed at the 2000 Summer Olympics in Sydney, Australia. The Haitian team consisted of five competitors: three track and field athletes, one judoka, and one tennis player.
The Democratic Republic of the Congo competed at the 2000 Summer Olympics in Sydney, Australia.
Chad competed at the 1992 Summer Olympics in Barcelona, Spain.
Chad competed at the 1988 Summer Olympics in Seoul, South Korea.
Chad competed at the 1984 Summer Olympics in Los Angeles, United States. Chad returned to the Olympic Games after boycotting both the 1976 and 1980 Games.
Chad competed at the 1972 Summer Olympics in Munich, West Germany.
Chad competed at the 1968 Summer Olympics in Mexico City, Mexico. It was the second appearance of the African nation, which made its debut in 1964.
Iceland competed at the 1956 Summer Olympics in Melbourne, Australia. Vilhjálmur Einarsson won the first ever Olympic medal for his country.
Saudi Arabia competed at the 2008 Summer Olympics in Beijing, China. As in years past, Saudi Arabia sent only male representatives to Beijing. The International Olympic Committee is reportedly pressuring the Saudi Olympic Committee to send female athletes to the 2012 Summer Olympics.
Syria competed in the 2008 Summer Olympics which was held in Beijing, People's Republic of China from 8 to 24 August 2008. This was the nation's eleventh appearance at the Olympics since its debut in 1948. The Syrian Olympic Committee sent eight athletes who took part in five sports in the games.
Chad sent a delegation of two athletes to compete at the 2008 Summer Olympics in Beijing, China: Moumi Sébergué, who competed in the men's 100 meters, and Hinikissia Albertine Ndikert, who competed in the women's 100 meters and also bore the Chadian flag during ceremonies. The appearance of this delegation marked the tenth appearance of Chad at the Summer Olympics, the first been in 1964 Summer Olympics in Tokyo, Japan, and its seventh appearance since its Olympic hiatus between 1976 and 1980. Both Sébergué and Ndikert ranked seventh in their respective heats and did not advance past the qualification round. As of the end of the 2012 London Olympics, there have been no medalists from Chad.
Vanuatu competed at the 2012 Summer Olympics in London, from 27 July to 12 August 2012. This was the nation's seventh appearance at the Olympics.
Chad competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. The country's participation in Rio de Janeiro marked its twelfth appearance at the Summer Olympics since its debut in 1964. The delegation included two track and field athletes: Bachir Mahamat in the men's 400 metres and Bibiro Ali Taher in the women's 5000 metres. Both athletes participated at the Games through wild card places since they did not meet the required standards to qualify. Neither athletes progressed past their heats.
Chad 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 country's participation in Tokyo marks its thirteenth appearance at the Summer Olympics since its debut in 1964.
