Juan Carlos Zabala, also known as "El Ñandú Criollo", was an Argentine long-distance runner, winner of the marathon race at the 1932 Summer Olympics.
Argentina at the 1952 Summer Olympics in Helsinki, Finland was the nation's ninth appearance out of twelve editions of the Summer Olympic Games. Argentina sent to the 1952 Summer Olympics its sixth national team, under the auspices of the Argentine Olympic Committee, 123 athletes, who competed in 77 events in 15 sports They brought home five medals: 1 gold, 2 silver and 2 bronze. The flag bearer was Delfo Cabrera, the gold medalist in the immediately previous Summer Olympic Games marathon.
Djibouti took part in the 1988 Summer Olympics which were held in Seoul, South Korea from September 17 to October 2. The country's participation marked its second appearance in the Summer Olympics since its debut at the 1984 Summer games in Los Angeles, United States. The delegation from Djibouti included six athletes, five in athletics and one in sailing. The five athletes for athletics were Hoche Yaya Aden, Ismael Hassan, Talal Omar Abdillahi, Hussein Ahmed Salah, and Omar Moussa while Robleh Ali Adou represented the nation in sailing. Ahmed Salah won the nation's first Olympic medal, which is a bronze at the Men's Marathon event.
Juan Carlos Navarro Feijoo, commonly known as either Juan Carlos Navarro or J. C. Navarro, is a Spanish former professional basketball player. During his playing career, at a height of 6 ft 4 in (1.93 m) tall, he played at the shooting guard position. On March 14, 2014, he was named a EuroLeague Basketball Legend. He is the current team manager of FC Barcelona Bàsquet.
The Central African Republic competed at the 1984 Summer Olympics in Los Angeles, United States. It had been 16 years since the previous appearance of the nation at the Summer Olympics, when it made its debut at the 1968 Games in Mexico City, Mexico. The Central African Republic was represented by three athletes; marathon runner Adolphe Ambowodé and two boxers, Dieudonné Kossi and Antoine Longoudé. There were no medals won by the trio.
Djibouti has participated in nine Summer Olympic Games as of the completion of the 2020 Summer Olympics in Tokyo. They have never competed in the Winter Olympic Games. Djibouti debuted at the 1984 Summer Olympics in Los Angeles, United States of America with three athletes, but did not take home a medal. The highest number of Djiboutian athletes participating in a summer Games is eight in the 1992 games in Barcelona, Spain. Only one Djiboutian athlete has ever won a medal at the Olympics, marathon runner Hussein Ahmed Salah, who won a bronze medal in the 1988 marathon.
Guatemala competed in the 2008 Summer Olympics, held in Beijing, People's Republic of China from August 8 to August 24, 2008. In what was the country's fourteenth Summer Olympics since its debut at the 1952 Summer Olympics in Helsinki, Finland. A total of twelve athletes competed in nine sports and twelve distinct events. It was the lowest number of participants for Guatemala since the 1980 Games in Moscow, USSR. Three of the twelve athletes were taking part in their second Olympics, and one of them, race walker Luis García, participated in his fourth. In any event that involved a progression through rounds, the Guatemalan athletes did not advance past the first round; as of the Beijing Olympics, there had yet to be a Guatemalan medalist. At the opening ceremony, badminton player Kevin Cordón bore Guatemala's flag.
East Timor (Timor-Leste) competed at the 2008 Summer Olympics in Beijing, China which was held from 8 to 24 August. The country's participation at Beijing marked its second appearance in the Summer Olympics since its debut in the 2004 Summer Olympics. The delegation included Augusto Ramos Soares and Mariana Diaz Ximenez, both of whom were marathoners that qualified via wildcard places as the nation had no athletes that met the "A" or "B" qualifying standards. Ximenez was selected as flag bearer for the opening ceremony. Neither of the two athletes finished their events; Soares did not even start.
Cape Verde competed at the 2008 Summer Olympics in Beijing, China. Their participation marked their fourth Olympic appearance. Two Cape Verdeans competed in the Olympic games: Nelson Cruz participated as a marathon runner, and Wania Monteiro participated in gymnastics. Another athlete, Lenira Santos, was selected to compete in athletics but was forced to pull out due to injury. Monteiro was selected as the flag bearer for both the opening and closing ceremonies. Neither of the Cape Verdeans progressed beyond the first round.
Juan Luis Barrios Nieves is a Mexican runner. He competed in the 5000 m at the 2008 and 2012 Olympics and finished seventh-eighth. He placed 14th in the same event at the 2007 and came 18th in the 10,000 metres at the 2009 World Championships.
Diego Alberto Colorado is a male long-distance runner from Colombia. He represented his country in the marathon at the 2001 World Championships in Athletics, taking 32nd place. He has won medals on the track over 10,000 metres, taking bronze at the 2005 South American Championships in Athletics and silver at the 2008 CAC Championships.
Juan Carlos Oleniak is an Argentine former footballer who played as a forward for clubs in Argentina, Mexico, Chile and Uruguay, as well as the Argentina national team at the 1962 FIFA World Cup in Chile. He also competed at the 1960 Summer Olympics.
East Timor, also known as Timor-Leste and officially as the Democratic Republic of Timor-Leste, competed at the 2012 Summer Olympics in London, held from July 27 to August 12, 2012. This was the nation's fourth appearance at the Olympics, although it was first appeared as part of the Individual Olympic Athletes. Two marathon runners were selected to the team by wildcard places, without having qualified at any sporting event. East Timor, however, has yet to win its first Olympic medal.
Juan Carlos Romero Bernal is a Mexican long-distance runner who competed in the 2008 Summer Olympics.
Carlos de Anda Dominguez was a Mexican accomplished sprinter who competed internationally, eventually reaching the 1932 Summer Olympics, and qualifying for the 1936 Summer Olympics.
Juan Carlos Pablo Dyrzka was an Argentine hurdler who competed in the 1964 Summer Olympics and in the 1968 Summer Olympics.
Juan Carlos Romero Arribas is a Guatemalan sport shooter. Romero made his official debut for the 1996 Summer Olympics in Atlanta, where he placed twenty-sixth in men's skeet, with a score of 118 points, tying his position with five other shooters including British-born Cypriot Antonis Nikolaidis.
Alfredo Arévalo Reyes is a Guatemalan marathon runner. In 2004, he achieved both his personal best and a national record-breaking time of 2:12:53 at the National Capital Marathon in Ottawa, Ontario, Canada.
Juan Carlos Jacinto Jiménez is a Dominican judoka, who played for the extra and half lightweight categories. He won the bronze medal for the 60 kg class at the 1999 Pan American Games in Winnipeg, Manitoba, Canada.
Juan Silva was a Chilean long-distance runner. He competed in the marathon at the 1956 Summer Olympics and the 1960 Summer Olympics.
Colombia 
