The Maldives competed in the 2008 Summer Olympics, which were held in Beijing, China from August 8 to August 24, 2008. The country's participation at the Beijing Olympics marked its seventh appearance in the Summer Olympics since its debut at the 1988 Summer Olympics. The delegation included four athletes, two in athletics, and two in swimming who participated in four distinct events. Its four athletes did not advance past the first round in each of their events. Aminath Rouya Hussain carried the Maldivian flag during the parade of nations of the opening ceremony with sprinter Ali Shareef being the flagbearer for the closing ceremony. The country failed to win an Olympic medal at these Games and has yet to win their first medal.
Jack Howard is a track and field sprint athlete who competes internationally for the Federated States of Micronesia.
Barakat Mubarak Al-Harthi is an Omani sprinter who specializes in the 100 metres.
The British Virgin Islands sent a delegation to compete at the 2012 Summer Olympics in London, United Kingdom, which took place between 27 July to 12 August 2012. The country's participation in London marked its eighth appearance at the Summer Olympics since its debut in the 1984 Summer Olympics. The British Virgin Islands delegation included two track and field athletes, 100 meter sprinters J'maal Alexander and Tahesia Harrigan-Scott. Alexander failed to progress through the heats whilst Harrigan-Scott was eliminated in her event's quarterfinals.
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 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.
During the 2012 Summer Olympics in London, United Kingdom, Saint Vincent and the Grenadines appeared in their seventh consecutive Summer Olympics. The country sent three competitors to their team with wild card entries. Athlete Kineke Alexander reprised her role as the nation's flag bearer for the second time at the opening ceremony. As Alexander entered her second Olympics, athlete Courtney Carl Williams and swimmer Tolga Akcayli debuted at the 2012 Olympics. For Saint Vincent and the Grenadines, none of the country's competitors advanced past their individual heats. In overall standings, Akcayli had the highest 2012 Olympic finish for Saint Vincent and the Grenadines when he placed 45th in the men's 50 metre freestyle.
Laos competed at the 2012 Summer Olympics in London when the event took place from 27 July to 12 August 2012. It was the nation's eighth overall appearance following their Olympic debut in 1980. Laos had previously competed in seven consecutive Olympics prior to London apart from the 1984 Summer Olympics boycott. Two athletes and one swimmer were selected to the Laotian Olympic team after the country did not qualify any competitors.
Athletics at the 2020 Summer Olympics were held during the last ten days of the Games. They were due to be held from 31 July – 9 August 2020, at the Olympic Stadium in Tokyo, Japan. Due to the COVID-19 pandemic, the games were postponed to 2021, with the track and field events set for 30 July – 8 August. The sport of athletics at these Games was split into three distinct sets of events: track and field events, remaining in Tokyo, and road running events and racewalking events, moved to Sapporo. A total of 48 events were held, one more than in 2016, with the addition of a mixed relay event.
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.
Kamia Yousufi is an Afghan female sprinter. Her parents are originally from Kandahar.
Margaret Vanessa Barrie is a Sierra Leonean sprinter. She competed in the women's 400 metres at the 2017 World Championships in Athletics. In 2019, she competed in the women's 200 metres and women's 4 × 400 metres relay at the 2019 African Games held in Rabat, Morocco.
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.
Tuvalu competed at the 2020 Summer Olympics in Tokyo, which were held from 23 July to 8 August 2021. Originally scheduled to take place from 24 July to 9 August 2020, the event was postponed due to the COVID-19 pandemic. Their participation marked their fourth consecutive appearance at the Summer Olympics since their debut at the 2008 Summer Olympics. The Tuvaluan delegation consisted of the sprinters Karalo Maibuca and Matie Stanley, both of whom were competing in their first Olympics. Neither Maibuca nor Stanley managed to progress beyond the preliminary rounds of their events, although Maibuca set a Tuvaluan national record of 11.42 seconds in the men's 100 metres.
Comoros 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, due to the COVID-19 pandemic. It was the nation's seventh consecutive appearance at the Summer Olympics.
Joella Lloyd is an athlete from Antigua and Barbuda who holds the national record in both the 100 metres and 200 metres sprint events.
Mauritania competed at the 2020 Summer Olympics in Tokyo which were held from 23 July to 8 August 2021. Originally scheduled to take place from 24 July to 9 August 2020, the Games were postponed due to the COVID-19 pandemic. It was the nation's tenth appearance at the Summer Olympics since its debut in 1984. The delegation consisted of two athletes, one man and one woman, competing in two athletic events. Sprinters Abidine Abidine and Houlèye Ba represented Mauritania in the men's 5000 metres and women's 800 metres event, respectively. For the first time, in an effort to promote gender equality, two flagbearers, one male and one female were allowed at the Olympics. Abidine and Houlèye lead the Mauritanian squad as the flagbearers in the opening ceremony. As of 2023, Mauritania, however, has yet to win its first ever Olympic medal.
Karalo Hepoiteloto Maibuca Junior is a Tuvaluan sprinter. He is the son of Ratu Karalo Maibuca Senior, a Fijian, and a mother from Kioa. He was selected to compete at the 2020 Summer Olympics and was given the honour of being the flag bearer for his nation in the opening ceremony alongside Matie Stanley. In the preliminary round of the 100m he ran a Tuvaluan national record time of 11.42 seconds, but did not qualify to the next round.
The following table is an overview of national records in the 100 metres.
Chuukeese 
Federated States of Micronesia 
