Mauritania sent a delegation to compete at the 2000 Summer Olympics in Sydney, Australia from 15 September to 1 October 2000. This was the African nation's fifth time competing at the Summer Olympic Games. The Mauritanian delegation consisted of two track and field athletes, Sidi Mohamed Ould Bidjel and Fatou Dieng. Neither advanced beyond the first round of their respective events.
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.
Mauritania competed at the 2008 Summer Olympics which was held in Beijing, China. The country's participation at Beijing marked its seventh appearance in the Summer Olympics since its debut in the 1984 Summer Olympics. The delegation included two track and field athletes, Souleymane Ould Chebal and Bounkou Camara, who were both selected by wildcards after both failed to meet either the "A" or "B" qualifying standards. Chebal was selected as the flag bearer for the opening ceremony. Neither of the Mauritanians progressed beyond the heats.
Souleyman Chebal Moctar, also spelled Souleyman Ould Chebal, Souleymane Ould Chebal, or Souleymane Ould Chebel, is a track athlete from Mauritania. His specialty is the 800 metres. At the 2008 Beijing Olympics, he was the Mauritania team's flagbearer and finished 7th in his 800 m heat.
Cruz Rolando Palacios Castillo is a Honduran sprinter who specializes in the 100 metres and 200 metres. He was born in Sambo Creek, a traditional Garífuna village. His personal best time is 10.22 seconds, achieved in July 2008 in Toluca.
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.
Mauritania 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 debut in the 1984 Summer Olympics. The delegation included two track and field athletes, Jidou El Moctar and Aicha Fall, who were selected to the team by wildcard places, as the nation had no athletes that met either the "A" or "B" qualifying standards. Moctar was selected as flag bearer for the opening ceremony while a LOCOG Games Maker carried it for the closing ceremony. Neither of the two athletes progressed beyond the heats.
The African island nation of São Tomé and Príncipe competed at the 2012 Summer Olympics in London, held from 27 July to 12 August 2012. This was the nation's fifth appearance at the Olympics since its debut in 1996. Two track and field athletes, Christopher Lima da Costa and Lecabela Quaresma were selected to the team by wildcard places, without having qualified at any sporting event. Quaresma was selected as flag bearer for the opening and closing ceremonies. Neither of the two athletes progressed beyond the first round of their respective events.
Mosito Lehata is a Mosotho athlete competing in sprinting events. He is the current holder of the Lesotho national record for the 100-meter at 10.11 seconds, and has consistently won the national track championships on shorter tracks. He was eliminated in the first round of the men's 200 m event at the 2012 Summer Olympics. Lehata found success in the 200 m event at the 2013 World Championships in Athletics when he finished in the first round ahead of Jamaican sprinter Usain Bolt and advanced to the semifinals. He set a new national record in the 200 m at the 2014 Commonwealth Games, finishing in 4th, four hundredths of a second behind the bronze medal winner.
Phumlile Sibonakele Ndzinisa is a Swazi athlete. She competed in the 400 m event at the 2012 Summer Olympics in London where she was eliminated in the first round, but broke the national women's 400m record with 53.95 seconds.
Saint Kitts and Nevis competed at the 2016 Summer Olympics in Rio de Janeiro, from August 5 to 21, 2016. This was the nation's sixth consecutive appearance at the Summer Olympics.
Djibouti competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. The nation's participation marked its eighth appearance at the Summer Olympics. Djibouti did not field any athletes at the 2004 Summer Olympics in Athens.
Belize competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. It was the nation's twelfth appearance at the Olympic Games, although it had previously appeared in two early editions under the name "British Honduras". Belize joined the United States-led boycott of the 1980 Summer Olympics hosted in Moscow, Russia. The delegation included two track and field athletes: Brandon Jones and Katy Sealy, as well as judoka Renick James. All three athletes made their Olympic debut. Belize Olympic and Commonwealth Games Association appointed 200 metres sprinter Brandon Jones to carry the nation's flag in the opening ceremony. Belize, however, has yet to win its first Olympic medal.
Mauritania competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, which was held from 5 to 21 August 2016. The country's participation at Rio de Janeiro marked its ninth appearance in the Summer Olympics since its debut at the 1984 Summer Olympics in Los Angeles.
Swaziland 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 tenth appearance at the Summer Olympics since its debut in 1972. The delegation included two track and field athletes: Sibusiso Matsenjwa in the men's 200 metres and Phumlile Ndzinisa in the women's 100 metres. Both athletes participated at the Games through wildcard places since they did not meet the required standards to qualify. Neither athletes progressed past their heats, although Matsenjwa set a new national record.
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. Afghanistan failed to earn a single Olympic medal in Rio for the first time since 2004.
Brunei, officially known as Brunei Darussalam, competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's seventh appearance at the Summer Olympics since its debut at the 1988 Summer Olympics. Brunei failed to register any athletes in two editions of the Games: 1992 in Barcelona and 2008 in Beijing.
Chloé Marie Helene Sauvourel is a French-born Central African swimmer. She competed at the 2016 Summer Olympics in the women's 50 metre freestyle event; her time of 37.15 seconds in the heats did not qualify her for the semifinals. She was the flagbearer for her country at the Parade of Nations.
Djibouti 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. This was the nation's ninth appearance at the Summer Olympics. Djibouti did not field any athletes at the 2004 Summer Olympics in Athens. The delegation consisted of four athletes, three men and one women, competing in five events across three sports. Two athletes participated in the judo and swimming tournaments: Aden-Alexandre Houssein and Houssein Gaber Ibrahim. Athlete Ayanleh Souleiman, a returning competitor from the 2016 Rio Olympics competed in the men's 800 metres and 1500 metres. Souhra Ali Mohamed, who had previously participated in the 2012 Summer Olympics competed in the women's 1500 metres event. Houssein lead the Djiboutian squad as the flagbearer in the opening ceremony with Souhra being the flagbearer for the closing ceremony.
The Maldives 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. This was the nation's ninth appearance at the Summer Olympics since its debut in 1988. The delegation consisted of four athletes, two men and two women, competing in four events across three sports. Two athletes participated in the swimming tournament: Mubal Azzam Ibrahim and Aishath Sajina. Athlete Hassan Saaid, a returning competitor from the 2016 Rio Olympics competed in the men's 100 m. Fathimath Nabaaha Abdul Razzaq was the first badminton player the Maldives entered into the Olympic tournament since the 2012 London Olympics. For the first time, in an effort to promote gender equality, two flagbearers, one male and one female were allowed at the Olympics. Nabaaha and Mubal lead the Maldivian squad as the flagbearers in the opening ceremony. The Maldives, however, has yet to win its first ever Olympic medal.
Mauritania 
