Algeria competed at the 2004 Summer Olympics in Athens, Greece from 13 to 29 August 2004. It first competed in the Olympics in 1964, and entered the 2004 Athens Games having won a total of twelve medals — including one gold, one silver, and three bronze medals at the 2000 Summer Olympics. These medals were in athletics and boxing. 61 competitors, 46 men and 15 women, took part in 57 events in 10 sports.
Mexico competed at the 2004 Summer Olympics in Athens, Greece, from 13 to 29 August 2004. This was the nation's twentieth appearance at the Olympics, since its debut in 1900. Comité Olímpico Mexicano sent the nation's largest delegation to the Games since 1992. A total of 109 athletes, 59 men and 50 women, competed in 20 sports. Football was the only team-based sport in which Mexico had its representation in these Olympic Games. There was only a single competitor in fencing, shooting, and weightlifting.
El Salvador competed at the 2004 Summer Olympics in Athens, Greece, from 13 to 29 August 2004. This was the nation's eighth appearance at the Olympics.
Peru competed at the 2004 Summer Olympics in Athens, Greece, from 13 to 29 August 2004. This was the nation's fifteenth appearance at the Olympics, except the 1952 Summer Olympics in Helsinki.
Colombia competed at the 2004 Summer Olympics in Athens, Greece, from 13 to 29 August 2004. This was the nation's sixteenth appearance at the Olympics, except the 1952 Summer Olympics in Helsinki.
Uruguay competed at the 2004 Summer Olympics in Athens, Greece, from 13 to 29 August 2004. This was the nation's eighteenth appearance at the Olympics, except the 1980 Summer Olympics in Moscow, because of its partial support to the United States boycott.
El Salvador competed at the 2000 Summer Olympics in Sydney, Australia, from 15 September to 1 October 2000. This was the nation's seventh appearance at the Olympics.
El Salvador first competed in the Olympic Games at the 1968 Summer Olympics in Mexico City, Mexico. It has participated in every Summer Olympic Games since that time, excluding those held in 1976 and 1980, when the nation joined the American-led boycott in protest of the Soviet invasion of Afghanistan. They have never competed in the Olympic Winter Games. El Salvador has not earned a medal at any Olympic Games.
Brazil sent a delegation to compete at the 2008 Summer Olympics in Beijing, China, in August 2008. Brazilian athletes have competed in every Summer Olympic Games since 1920, except the 1928 Summer Olympics. The country is represented by the Brazilian Olympic Committee. Brazil headed to the Beijing Games with its largest Olympic delegation ever, 277 athletes, including a record 132 women. The 17 medals won by Brazil topped the previous medal count record set in 1996, and included the first individual and gold medals by women, by judoka Ketleyn Quadros and jumper Maurren Maggi, respectively. Three of the medals were gold, by Maggi, swimmer César Cielo and the female volleyball team.
India competed at the 2008 Summer Olympics in Beijing, People's Republic of China. India was represented by the Indian Olympic Association (IOA). A contingent of 57 athletes in 12 sports represented India, and had a support-staff of 42 officials.
Portugal competed at the 2008 Summer Olympics in Beijing, People's Republic of China. It was the nation's twenty-second consecutive appearance at the Olympics. The Olympic Committee of Portugal was represented by a delegation of 129 people, of which 77 were competitors participating in 16 sports. Nelson Évora, the 2007 triple jump world champion, was chosen as the flag bearer during the opening ceremony; he won the triple jump event, giving Portugal its fourth ever Olympic gold medal.
Colombia competed at the 2008 Summer Olympics. The country sent 68 athletes to compete in 15 sports, making this Colombia's largest ever delegation to the Olympics.
Paraguay 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, except the 1980 Summer Olympics in Moscow because of its partial support to the United States boycott.
Chile competed at the 2012 Summer Olympics in London, from 27 July to 12 August 2012. This nation has competed at every Olympic games, except the 1932 Summer Olympics in Los Angeles, and the 1980 Summer Olympics in Moscow because of the United States boycott.
Ecuador competed at the 2012 Summer Olympics in London, from 27 July to 12 August 2012. This was the nation's twelfth consecutive appearance at the Olympics. It had first competed at the 1924 Summer Olympics in Paris.
Peru competed at the 2012 Summer Olympics in London, from 27 July to 12 August 2012. This was the nation's seventeenth appearance at the Olympics, having only missed the 1952 Summer Olympics in Helsinki.
El Salvador competed at the 2012 Summer Olympics in London, United Kingdom, from 27 July to 12 August 2012. This was the nation's tenth appearance at the Olympics.
El Salvador 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, although it first competed in 1968.
Ecuador competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. It was the nation's fourteenth appearance at the Summer Olympics, since its debut in 1924.
Peru competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. Since the nation's official debut in 1936, Peruvian athletes have appeared in every edition of the Summer Olympic Games throughout the modern era. Peru failed to register any athletes at the 1952 Summer Olympics in Helsinki.
