The Democratic Republic of the Congo competed at the 2012 Summer Olympics in London, United Kingdom from 27 July to 12 August 2012. This was the nation's ninth appearance at the Olympics since its debut in 1968, although four of its appearances were under the name "Zaire", and the first appearance was under the name "Congo Kinshasa".
Benin competed at the 2012 Summer Olympics in London, United Kingdom from 27 July to 12 August 2012. This was the nation's tenth appearance at the Olympics, except the 1976 Summer Olympics in Montreal because of the African boycott.
Chad competed at the 2012 Summer Olympics in London, which was held from 27 July to 12 August 2012. This marked the nation's eleventh appearance at the Summer Olympics since its debut in the 1964 Summer Olympics. The Chadian delegation included track and field athlete Hinikissia Ndikert and judoka Carine Ngarlemdana. Ngarlemdana was the flag bearer for the opening ceremony and Ndikert was the flag bearer for the closing ceremony. Neither of Chad's athletes progressed beyond the first round of their events. Chad was one of only two countries to have a female-only team at the 2012 games.
Djibouti competed at the 2012 Summer Olympics in London, from July 27 to August 12, 2012. This was the nation's seventh appearance at the Olympics.
Guinea competed at the 2012 Summer Olympics in London, from 27 July to 12 August 2012. This was the nation's tenth appearance at the Olympics, excluding the 1972 Summer Olympics in Munich, and the 1976 Summer Olympics in Montreal because of the African boycott.
Liberia competed at the 2012 Summer Olympics in London, United Kingdom from 27 July to 12 August 2012. This was the nation's eleventh appearance at the Olympics since its debut in 1956.
Fiji participated in the 2012 Summer Paralympics in London, United Kingdom, from August 29 to September 9.
At the 2012 Summer Olympics Parade of Nations of the 2012 London Olympics, athletes and officials from each participating country paraded into the Olympic Stadium preceded by their national flag to the sound of iconic British modern music. Each flag bearer was chosen by each nation's National Olympic Committee or by the delegation of athletes.
Malawi 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 ninth appearance in the Summer Olympics since its début at the 1972 Summer Olympics. The delegation included two track and field athletes; Mike Tebulo and Ambwene Simukonda, and one swimmer; Joyce Tafatatha. Tebulo and Simukonda qualified through wildcard places for their respective events. Tebulo was selected as the flag bearer for the opening and closing ceremonies. Tebulo finished 44th in the men's marathon, while Simukonda did not advance beyond the first round of the women's 400 metres. Tafatatha won her heat in the women's 50 metre freestyle but her time was not fast enough to allow her to progress into the semi-finals of the event.
The African island country of Seychelles competed at the 2012 Summer Olympics in London, United Kingdom, held from 27 July to 12 August 2012. This was the nation's eighth appearance at the Olympics, except the 1988 Summer Olympics in Seoul because of its partial support to the North Korean boycott.
Nauru 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 fifth appearance in the Summer Olympics since its debut at the 1996 Summer Olympics. The delegation consisted of two participants: Sled Dowabobo in the men's lightweight judo contest and Itte Detenamo in the men's super-heavyweight weightlifting competition. Dowabobo qualified as one of Oceania's highest ranked judo competitors while Detenamo made the Games based on his qualifying performance. Detenamo was the flag bearer for both the opening and closing ceremonies. Dowabobo was eliminated by his opponent Navruz Jurakobilov in the round of 64 and Detemano was 14th in his event.
Séverine Nébié is a Burkinabé judoka who trains in France. She competed at the 2012 Summer Olympics in the Women -63kg event and lost in the second round. She was also the flag bearer for Burkina Faso at the opening ceremony. She also competes in ju-jitsu in which she won the world championship 2015 in Thailand.
Augusto Ramos Soares is an East Timorese long distance runner. He represented his country in the marathon event at the 2012 Summer Olympics in London, finishing in 84th place. He was also East Timor's flag-bearer at the 2012 Games.
Carine Ngarlemdana is a Chadian judoka. She competed at the 2012 Summer Olympics in the Women's -70 kg event. She was the flag bearer for Chad at the opening ceremony.
Facinet Keita is a Guinean judoka who competed in the Men's 100+ kg category at the 2012 Summer Olympics in London. He lost to Ricardo Blas, Jr. in the first round. Keita was the flag bearer for Guinea at the opening ceremony.
Winston George is a Guyanese sprinter. He competed in the 400 m event at the 2012 Summer Olympics. He was the flag bearer of Guyana during the 2012 Summer Olympics opening ceremony. He was also named Guyana's Male Athlete of the Year in 2011 and 2013 by the Athletics Association of Guyana.
HortenseDiédhiou is a Senegalese judoka. She participated in three Olympic games: 2004 in the -52kg event, 2008 at -52kg and 2012 at -57kg. She was the flag bearer of Senegal at the 2012 Summer Olympics opening ceremony. At the 2004 Olympics, she met Frédérique Jossinet who invited her to train in France. Following that recommendation Diédhiou moved to Provence and in 2011 to Paris.
Kineke Alicia Alexander is a Vincentian sprinter who competed in the 400m event at the 2008 Summer Olympics and the 2012 Summer Olympics. She was the flag bearer for Saint Vincent and the Grenadines at the 2008 opening ceremony and the 2012 opening ceremony. She was also the Saint Vincent and the Grenadines flagbearer at the 2014 Commonwealth Games.
Seychelles competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's eighth appearance at the Summer Olympics, with the exception of the 1988 Summer Olympics in Seoul because of its partial support to the North Korean boycott.
Seychelles competed at the 2019 African Games held from 19 to 31 August 2019 in Rabat, Morocco. In total, athletes representing Seychelles won one gold medal, one silver medal and two bronze medals and the country finished 18th in the medal table. All medals were won in swimming by Felicity Passon. Passon also served as flag bearer at the opening ceremony of the 2019 African Games.
Seychelles 
