Yang Yu is an Olympic medal-winning swimmer from the People's Republic of China. She became part of the Chinese national swimming team in 1999, and competed for Team China at the 2008 Summer Olympics.
Mireia Belmonte García is a Spanish Olympic, world, and European champion swimmer. She was the first Spanish woman to win a gold medal in swimming at an Olympic Games and is widely considered to be the greatest Spanish swimmer of all time.
Sarah Fredrika Sjöström is a Swedish competitive swimmer specialising in the sprint freestyle and butterfly events. She is the current world record holder in the 50-meter freestyle, the 100-meter freestyle, the 50-meter butterfly, the 100-meter butterfly, and the 4×50-meter medley relay. She is a former world record holder in the 50-meter freestyle, 100-meter freestyle, 100-meter butterfly, and 200-meter freestyle. She is the first Swedish woman to win an Olympic gold medal in swimming. She won the Overall Swimming World Cup in 2017 and 2018 and she has won 10 individual World Championship gold medals. She currently represents Energy Standard in the International Swimming League.
Lauren Marie Boyle is a former competitive swimmer from New Zealand. She has competed at three Commonwealth Games and three Olympic Games.
Melissa Franklin Johnson is an American former competition swimmer and five-time Olympic gold medalist. She formerly held the world record in the 200-meter backstroke. As a member of the U.S. national swim team, she also held the world records in the 4×100-meter medley relay.
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.
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.
Rūta Meilutytė is a Lithuanian swimmer. An Olympic gold medalist, she is the current world record holder in the 100 metre breaststroke.
Brunei, officially known as Brunei Darussalam, competed at the 2012 Summer Olympics in London, which was held from 27 July to 12 August 2012. The country's participation in London marked its fifth appearance in the Summer Olympics since its debut in the 1988 Summer Olympics.
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.
Swaziland 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 debut at the 1972 Summer Olympics. The delegation included two track and field athletes: Sibusiso Matsenjwa and Phumlile Ndzinisa, and one swimmer, Luke Hall; the first two competitors qualified for the Games through wildcard places while Hall was awarded a universality place by FINA. Hall was selected as the flag bearer for the opening ceremony and Matensjwa held it for the closing ceremony. All three competitors did not advance further than the heat stages of their respective events.
Mindaugas Sadauskas is a Lithuanian swimmer who specialized in sprint freestyle events. He is a multiple-time Lithuanian champion, who represented his country at the FINA World Championships, LEN European Championships and other international competition. Sadauskas also represented Lithuania at the London Olympic Games in 2012. He has seven national level records at the moment. Sadauskas is also a member of the swimming team for SMU Mustangs at the Southern Methodist University in Dallas, Texas. Sadauskas achieved multiple gold medals at the Conference USA while studying at the SMU.
Nina Dittrich is an Austrian swimmer, who specialized in freestyle and butterfly events. She is a multiple-time Austrian champion, a five-time national record holder, and also, a current member of Simmering Swimming Club in Schwechat. Dittrich is also the daughter of Ulrike Bauer, an Austrian record holder in both 100 and 200 m breaststroke, and Kurt Dittrich, a sprint butterfly swimmer who competed at the 1980 Summer Olympics in Moscow.
Kim Seo-yeong is a South Korean swimmer, who specialized in individual medley events. Kim broke a South Korean record of 2:13.65 to take the bronze medal in the 200 m individual medley at the 2009 East Asian Games in Hong Kong.
Katarína Filová is a Slovak swimmer, who specializes in sprint freestyle events. She is a multiple-time Slovak freestyle relay record holder, and a two-time 2013 Atlantic Coast Conference team champion. Filova is also a resident athlete for J&T Sport Team Bratislava, and is coached and trained by Gabriel Baran.
Raminta Dvariškytė is a Lithuanian swimmer who specialized in breaststroke events. She represented her nation Lithuania at the 2008 Summer Olympics, and has claimed multiple Lithuanian championship titles and two national records in both the breaststroke and medley relay events.
Elina Partõka is an Estonian former swimmer, who specialized in sprint freestyle events. She is a three-time Olympian, and a daughter of Valentin Partyka, who competed in both 200 and 400 m individual medley at the 1972 Summer Olympics in Munich, Germany, representing the Soviet Union.
Emma Jennifer McKeon, is an Australian competitive swimmer. She is a four-time world record holder, one current and three former, in the 4x100 metre freestyle relay. Her total career haul of 11 Olympic medals following the 2020 Olympic Games made her Australia's most decorated Olympian and included one gold medal from the 2016 Summer Olympics in Rio de Janeiro and four gold medals from the 2020 Summer Olympics in Tokyo. With four gold and three bronze medals she was the most decorated athlete across all sports at the 2020 Summer Olympics, and tied for the most medals won by a woman in a single Olympic Games. She has also won 17 medals, including four gold medals, at the World Aquatics Championships; and twelve medals, including eight gold, at the 2014 Glasgow and 2018 Gold Coast Commonwealth Games.
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.
Diana Petkova is a Bulgarian swimmer. She competed at the 2020 Summer Olympics, in Women's 100 m breaststroke, and Women's 200 m individual medley.
Bulgaria 
