Kim Collins is a former Kittitian track and field sprinter. In 2003, he became the World Champion in the 100 metres. He represented his country at the Summer Olympics on five occasions, from 1996 to 2016, and was the country's first athlete to reach an Olympic final. He competed at ten editions of the World Championships in Athletics, from 1995 to 2015, winning five medals. He was a twice runner-up in the 60 metres at the IAAF World Indoor Championships. At regional level, he was a gold medallist at the Commonwealth Games and a silver medallist at the Pan American Games. As of 2023, he is the only individual world champion from Saint Kitts and Nevis.
Yuliya Nesterenko (alt. spelling: Yulia Nestsiarenka, née Bartsevich is a Belarusian sprinter who was the Olympic 100 meters champion in 2004.
Ivet Miroslavova Lalova-Collio is a Bulgarian athlete who specialises in the 100 metres and 200 metres sprint events. She is the 13th-fastest woman in the history of the 100 metres. She finished fourth in the 100 metres and fifth in the 200 metres at the 2004 Summer Olympics. Her career was interrupted for two years between June 2005 and May 2007 due to a leg injury sustained in a collision with another athlete. In June 2012 she won gold at the 2012 European Athletics Championships in the Women's 100 metres. In July 2016 she won two silver medals at the 2016 European Athletics Championships in both the Women's 100 and 200 metres. She has participated in five editions of the Olympic Games.
Kerron Stewart is a retired Jamaican sprinter who specialized in the 100 metres and 200 metres. She is the 2008 Jamaican national champion in the 100 m clocking 10.80s. She defeated World Champion Veronica Campbell-Brown in the process and now is the 2008 Summer Olympics silver medalist after she tied with Sherone Simpson in a time of 10.98s. She also earned a bronze medal in the 200 metres at the 2008 Summer Olympics with a time of 22.00s. She was born in Kingston and retired after the 2018 season.
Kelly-Ann Kaylene Baptiste is a Tobagonian track and field sprint athlete.
Barakat Mubarak Al-Harthi is an Omani sprinter who specializes in the 100 metres.
Grenada competed at the 2012 Summer Olympics in London, United Kingdom from 27 July to 12 August 2012. This was the nation's eighth consecutive appearance at the Olympics. Few weeks before the Games, Grenadian athletes trained at Broadbridge Heath Leisure Centre near Horsham, West Sussex.
Comoros competed at the 2012 Summer Olympics in London, England, which was held from 27 July to 12 August 2012. The country's participation at London marked its fifth appearance in the Summer Olympics since its début at the 1996 Summer Olympics. The delegation included two track and field athletes: Maoulida Darouèche and Feta Ahamada, and one swimmer, Ayouba Ali Sihame, all three qualified for the Games through wildcard places. Ahamada was selected as the flag bearer for the opening ceremony and Darouèche held it at the closing ceremony. Ahamada won her heat in the preliminary round of the women's 100 metres but was eliminated in the heat stages, while Darouèche and Sihame did not advance beyond the first round of their respective events.
The Gambia competed at the 2012 Summer Olympics in London, which was held from 27 July to 12 August 2012. The country's participation at London marked its eighth appearance in the Summer Olympics since its début at the 1984 Summer Olympics. The delegation included two athletes, Suwaibou Sanneh and Saruba Colley, the former had qualified by setting a qualifying time that fell within the required standard and the latter entered via a wildcard place. Sanneh was selected as the flag bearer for both the opening and closing ceremonies. Sanneh became the first Gambian athlete to advance into the semi-finals of the men's 100 metres, while Colley was eliminated after the quarter-final stages of the Women's 100 metres.
The Asian island nation of the Maldives competed at the 2012 Summer Olympics in London from 27 July to 12 August 2012. This was the nation's seventh consecutive appearance at the Olympics, the delegation consisted of two athletes each in track and field and swimming. For the first time since their debut at the Summer Olympics, the Maldives entered one badminton player into the Olympics. Mohamed Ajfan Rasheed, the inaugural Maldivian badminton player to compete at the Olympics, was the nation's flag bearer at the opening ceremony with Azneem Ahmed carrying the Maldivian flag in the closing ceremony. All the athletes qualified for the games through wild cards from International Association of Athletic Federations FINA and Badminton World Federation. The Maldives however, has yet to win its first ever Olympic medal.
Lidiane Lopes is a Cape Verdean sprinter who specialises in the 100 metres and 200 metres. She is the current Cape Verdean record holder in the 100-metre sprint. Lopes has competed at both the 2012 and 2016 Summer Olympics. At both Olympics, she competed in the 100 metres. She has also competed in a World Championships, a World Junior Championships, a World Youth Championships, a Jeux de la Francophonie, a Lusophony Games, an African Games, and an Ibero-American Athletics Championships.
Aminata Kamissoko is a Mauritanian sprint athlete.
Regine Tugade-Watson is a Guamanian sprinter. She competed in the women's 100 metres event at the 2015 World Championships in Athletics in Beijing, China, as well as the girl's 200 m event at the 2015 World Youth Championships in Cali, Colombia. She competed in the women's 100 m preliminary round of the 2016 Summer Olympics. Tugade finished third place in her heat but did not progress further. She also competed in her second World Championships in 2017, competing in the 200 m. She holds seven Guamanian national records in athletics. In July 2021 she was a flag bearer in the Parade of Nations at the Tokyo Olympics opening ceremony.
Oman competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, when the event was held from 5 to 21 August 2016. This was the nation's ninth consecutive appearance at the Summer Olympics. Four Omani athletes, two men and two women, were selected to compete in athletics and shooting at the Games. Among them were sprinter Barakat Al-Harthi, the lone returning Olympian from the previous Games.
São Tomé and Príncipe competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. The country's participation at Rio de Janeiro marked its sixth consecutive appearance at the Summer Olympics. Three athletes from São Tomé and Princípe were selected for the Games. Romário Leitão and Celma Bonfim da Graça participated in athletics and Buly Triste in flatwater canoeing. Bonfim was the only female on the roster and the only member with prior Olympic experience. Triste was the first male athlete to carry the São Tomé and Princípe flag at the opening ceremony. São Tomé and Princípe has yet to win its first Olympic medal.
Afghanistan competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. The country's participation at Rio de Janeiro marked its fourth consecutive appearance at the Summer Olympics and fourteenth in total. Afghanistan had officially made its debut in 1936 and missed five editions since then. Rohullah Nikpai, who had previously won a medal for Afghanistan in taekwondo, did not participate. In Rio, Afghanistan failed to earn a single Olympic medal for the first time since 2004.
Lenford Leon O'Garro is a Vincentian sprinter who competed at the 1992 Summer Olympics in Barcelona, Spain and also in two IAAF World Championships in Athletics.
Saeed Al-Adhreai is a Yemeni who is a track and field sprint athlete who competes internationally for Yemen, he competed in the 400 metres at the 2004 Summer Olympics and the 2005 World Championships in Athletics.
Evelyn Farrell is a sprinter who competed for the Netherlands Antilles at the 1984 Summer Olympics and for Aruba at the 1988 Summer Olympics. She was the first woman to represent Aruba at the Olympics.
The women's 100 metres event at the 2020 Summer Olympics took place on 30 and 31 July 2021 at the Japan National Stadium. 71 athletes from 55 nations competed at the event.
Saint Vincent and the Grenadines 
