Charles Houchin is an American former competition swimmer who has had his greatest international success in freestyle relay events. He earned a gold medal as a member of the winning United States team in the 4×200-meter freestyle relay at the 2012 Summer Olympics. He is the CEO and founder of Swimmingly. The Swimmingly app can operate an entire swim meet from iPhones or Android devices.
Malta 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 fifteenth appearance in the Summer Olympics since its début at the 1928 Summer Olympics. The delegation included two track and field athletes, Rachid Chouhal and Diane Borg, one double trap shooter William Chetcuti and two swimmers Andrew Chetcuti and Nicola Muscat. All five competitors qualified for the Games through wildcard places. William Chetcuti was selected as the flag bearer for the opening ceremony while Borg held it at the closing ceremony. Choudai did not progress beyond the preliminary stages of the men's 100 metres, while Borg advanced to the first round of the women's 100 metres before being eliminated. William Chetcuti finished ninth in the double trap shooting event, while Andrew Chetcuti and Muscat were unable to progress to the first rounds of their respective swimming disciplines.
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.
Zambia competed at the 2012 Summer Olympics in London, held from 27 July to 12 August 2012. The country's participation at London marked its twelfth appearance in the Summer Olympics since its début at the 1964 Summer Olympics. The delegation consisted of seven competitors; three track and field athletes Gerald Phiri, Prince Mumba and Chauzje Choosha, one each in Boxing and Judo and two swimmers, Zane Jordan and Jade Ashleigh Howard. Phiri, Mumba, Choombe and Munyonga had qualified by meeting the standards in their respective sports, and Choosha, Jordan and Howard qualified by wildcard places. Mumba was the national flag bearer at the opening and closing ceremonies.
Conor James Dwyer is a former American competition swimmer and Olympic gold medalist. He competed in freestyle and medley events, and won a gold medal as a member of the winning U.S. 4×200-meter freestyle relay team at the 2012 Summer Olympics. In total, he has won seventeen medals in major international competitions: nine gold, six silver, and two bronze spanning the Summer Olympics, the FINA World Championships, the Pan Pacific Championships, and the Pan American Games. Dwyer placed second at the 2016 US Olympic Swimming Trials in the 400m freestyle.
Nepal 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 twelfth appearance in the Summer Olympics since its début at the 1964 Summer Olympics. The delegation included two track and field athletes; Tilak Ram Tharu and Pramila Rijal, one shooter Sneh Rana and two swimmers; Prasiddha Jung Shah and Shreya Dhital; all five competitors qualified for the Games through wildcard places from their respective sporting governing bodies. It was the smallest delegation sent by Nepal since the 1992 Summer Olympics. Shah was selected as the flag bearer for the opening and closing ceremonies. Four of the five athletes were unable to progress beyond the first stages of their respective events while Rana finished 54th in the women's 10 metre air rifle shooting competition.
The men's 200 metre freestyle event at the 2012 Summer Olympics took place on 29–30 July at the London Aquatics Centre in London, United Kingdom. There were 40 competitors from 31 nations.
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.
Lesotho 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 tenth appearance in the Summer Olympics since its début at the 1972 Summer Olympics. The delegation included three track and field athletes; Tsepo Ramonene, Mosito Lehata and Mamorallo Tjoka, and one swimmer; Masempe Theko. Ramonene and Lehata qualified for the Games by meeting qualification standards, while Tjoka and Theko made the Olympics through wildcard places. Tjoka was selected as the flag bearer for the opening ceremony while Lehata held it at the closing ceremony. Ramonene finished last in the men's marathon and was revived by medical personnel during the event. Lehata did not progress to the semi-finals of the men's 200 metres and Tjoka finished in 90th in the women's marathon. Theko finished 73rd overall in the women's 50 metre freestyle and did not progress to the semi-finals of the event.
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.
David McKeon is an Australian competition swimmer. At the 2012 Summer Olympics in London, he competed in the men's 400-metre freestyle, finishing in 14th place in the heats, failing to reach the final.
Matthew Stanley is a New Zealand swimmer. His home town is Matamata. At the 2012 Summer Olympics he competed in the men's 400 metre freestyle, finishing in 15th place in the heats, failing to reach the final.
Ahmed Gebrel is a former Olympic swimmer who was born in Cairo (Egypt) for a Palestinian father and Egyptian mother. He started swimming in Al-Ahly Sporting Club in Egypt at young age. At that time he used to hold only the Palestinian nationality so at age 15 he could represent his country Palestine in 2006. He hold the Palestinian Swimming Records in: 100m, 200m, 400m, 800m and 1500m Freestyle, as well as the 200m and 400m Individual Medley.
Dion Dreesens is a Dutch swimmer.
Florent Manaudou is a French competitive swimmer, an Olympic champion of the 50-meter freestyle at the 2012 London Olympics, and the younger brother of Laure Manaudou, a 2004 Olympic gold medalist in swimming. He currently holds the world record in the 50-meter backstroke. He competes for the Energy Standard Swim Club in the International Swimming League.
Martin Verner is a Czech swimmer. At the 2008 Summer Olympics, he competed in the men's 100 metre freestyle, finishing in 21st place and failing to reach the semi-finals. At the 2012 Summer Olympics, he competed in the Men's 100 metre freestyle, finishing in 23rd place overall in the heats, failing to qualify for the semifinals.
Kristian Tsvetanov Gkolomeev is a Greek swimmer of Bulgarian ancestry. He specializes in sprint freestyle and butterfly events.
Jose Gabriel Melconian Alvez is an Olympic freestyler swimmer from Uruguay, with Armenian background.
Calum George Jarvis is a Welsh competitive swimmer who has represented Great Britain in World Championships and the Olympics, and Wales in the Commonwealth Games. Jarvis competes primarily in freestyle and backstroke events. In 2014, he competed at the Commonwealth Games in Glasgow as part of the Welsh team, winning the bronze medal in the 200m freestyle.
Finland 
