Tonga participated in the 2012 Summer Olympics in London, United Kingdom, which were held from 27 July to 12 August 2012. The country's participation in London marked its eighth appearance in the Summer Olympics since its debut at the 1984 Summer Olympics. The delegation included three competitors: two in athletics, Joseph Andy Lui and ʻAna Poʻuhila, along with one short distance swimmer Amini Fonua. The latter entry was Tonga's first appearance in Olympic swimming competition. Lui and Fonua qualified through wildcard places while Po'uhila made the games by meeting qualification standards. Fonua was selected as the flag bearer for the opening ceremony while Lui held it at the closing ceremony. Lui and Fonua failed to progress farther than the preliminary round of their respective events while Po'uhila finished 29th in the heat stage of the women's shot put contest.
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.
Ramon Gittens is a Barbadian sprinter. He represented his country at the 2012 Summer Olympics as well as four outdoor World Championships in Athletics. He was the 100 meters silver medalist at the 2015 Pan American Games.
Olivier Irabaruta is a Burundian long-distance runner. At the 2012 Summer Olympics, he competed in the Men's 5000 metres, finishing 29th overall in Round 1, failing to qualify for the final.
Athletics at the 2016 Summer Olympics were held during the last 10 days of the games, from 12 to 21 August 2016, at the Olympic Stadium. The sport of athletics at the 2016 Summer Olympics was made into three distinct sets of events: track and field events, road running events, and racewalking events.
The men's triple jump competition at the 2016 Summer Olympics in Rio de Janeiro, Brazil. The event was held at the Olympic Stadium on 15–16 August. Forty-seven athletes from 35 nations competed. The event was won by Christian Taylor of the United States, the fifth man to successfully defend Olympic gold in the triple jump. It was the United States' eighth victory in the event. Just as in London four years earlier, Will Claye took silver; the two Americans were the 13th and 14th men to win multiple medals in the event. Dong Bin of China earned bronze, the nation's first medal in the men's triple jump.
Mauritius competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's ninth 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.
Tanzania competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. Seven athletes, five men and two women, competed in five events across three sports, but did not win any medals. Hilal Hemed Hilal, however, set a new national record in the men's 50 m freestyle event. Four athletes took part in track and field athletics, all in marathons, while two participated in the swimming tournament's 50 m freestyle category. The flagbearer for the opening ceremony was Andrew Thomas Mlugu, who was Tanzania's first Olympic judoka. His counterpart in the closing ceremony was Alphonce Felix Simbu, who had earned the nation's best finish at the Games by placing fifth in the men's marathon. Prior to these Games, Tanzania had sent athletes to twelve editions of the Summer Olympics.
Hugues Fabrice Zango is a Burkinabé athlete who specialises in the triple jump and the long jump. He is the world indoor record holder in the triple jump with a jump of 18.07 m set in 2021 and the reigning world champion, winning the gold medal in the triple jump at the 2023 World Championships. Zango competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, and won the bronze medal at the 2020 Summer Olympics in Tokyo, Japan, in the triple jump event, the first ever Olympic medal for Burkina Faso. He has also competed in World Championships, two African athletics championships, a Jeux de la Francophonie, two Summer Universiades and two African Games. He became Burkina Faso's first-ever Olympic medalist, earning a bronze medal in Tokyo, and set the African triple jump record at the 2019 World Athletics Championships in Doha.
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.
Pol Moya Betriu is an Andorran middle-distance runner competing primarily in the 800 metres. He represented his country at the 2016 World Indoor Championships without qualifying for the final. He is the national record holder on several distances.
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.
Chad 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 twelfth appearance at the Summer Olympics since its debut in 1964. The delegation included two track and field athletes: Bachir Mahamat in the men's 400 metres and Bibiro Ali Taher in the women's 5000 metres. Both athletes participated at the Games through wild card places since they did not meet the required standards to qualify. Neither athletes progressed past their heats.
Equatorial Guinea 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 marked its ninth appearance in the Summer Olympics since its début in the 1984 Summer Olympics. The delegation included two track and field athletes, Benjamin Enzema and Reïna-Flor Okori who both qualified for the Games through wildcard places since their fastest times did not meet the required qualification standards, Okori was selected as the flag bearer for the opening and closing ceremonies. Enzema did not advance beyond the qualification round for the men's 800 metres event and Okori was unable to start the women's 100 metre hurdles contest.
South Sudan competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. South Sudan had been an independent nation since 2011, but its civil war had delayed its membership with the International Olympic Committee until 2015, making 2016 its first official appearance at the Olympic Games. The country was offered three universality placements in athletics, as no South Sudanese athletes met the Olympic qualifying standards prior to the Games. Three athletes, two men and one woman, competed in three track and field events, but did not win any medals. The sole woman, Margret Rumat Hassan, was given a spot eight days prior to the start of the Games that had been allotted previously to Mangar Makur Chuot. This change was against the advice of the South Sudan Athletics Federation and was due allegedly to pressure from Samsung, for whom Hassan had appeared in an advertisement. The flagbearer for both the opening and closing ceremony was Guor Marial, a marathon runner who, then unable to represent South Sudan, had competed as an Independent Olympic Athlete in 2012. Five South Sudanese nationals also competed as members of the Refugee Olympic Team.
The Maldives competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's eighth consecutive appearance at the Summer Olympics. The delegation included two track and field athletes: Hassan Saaid and Afa Ismail, as well as swimmers Ibrahim Nishwan and Aminath Shajan. Both Shajan and Ismail were returning competitors from the 2012 London Olympics, with the former leading the Maldivian squad as the flag bearer in the opening ceremony. The Maldives, however, has yet to win its first ever Olympic medal.
The Gambia, officially the Republic of the Gambia, competed at the 2016 Summer Olympics in Rio de Janeiro, which was held from 5 to 21 August 2016. The country's participation at Rio marked its ninth appearance at the Summer Olympic Games since its début at the 1984 Summer Olympics. The delegation included two track and field athletes, Adama Jammeh and Gina Bass, who both qualified after meeting the qualification standards for their respective events, one judoka, Faye Njie, who made the Games through a quota place and one swimmer, Pap Jonga, who earned a universality place to enter the Games. The Gambia made their début appearances in the judo and swimming events. Bass was selected as the flag bearer for the opening and closing ceremonies. All four athletes were eliminated from the first rounds of their events.
Mauritius sent a delegation to compete at the 2016 Summer Paralympics in Rio de Janeiro, Brazil, from 7–18 September 2016. This was the fifth time the country had taken part in a Paralympic Games after its debut at the 1996 Summer Paralympics. The Mauritian delegation to Rio de Janeiro consisted of two athletes: wheelchair racer Brandy Perrine and short-distance swimmer Scody Victor. The nation's best result was tenth overall by Perrine in the women's 100 metres T54 event as both competitors did not progress to the final in their respective competitions.
Mauritius competed at the 2019 African Games held from 19 to 31 August 2019 in Rabat, Morocco. In total, athletes representing the country won six gold medals, six silver medals and twelve bronze medals and the country finished 8th in the medal table.
