Dana Whitney Vollmer is a former American competition swimmer, five-time Olympic gold medalist, and former world record-holder. At the 2004 Summer Olympics, she won a gold medal as a member of the winning United States team in the 4×200-meter freestyle relay that set the world record in the event. Eight years later at the 2012 Summer Olympics, Vollmer set the world record on her way to the gold medal in the 100-meter butterfly, and also won golds in the 4×100-meter medley relay and 4×200-meter freestyle relay. She won three medals including a gold at the 2016 Summer Olympics in Rio de Janeiro.
Fabíola Pulga Molina is a butterfly and backstroke swimmer from Brazil, who competed at the 2000, 2008 and 2012 Olympics.
Ellen May Gandy, also known by her nickname Elly Gandy, is a British-born Australian former female butterfly swimmer. She represented Great Britain and England until 2012, and had almost all of her elite-level success under those flags. She represented Great Britain at the 2008 Summer Olympics and 2012 Summer Olympics in the 200m butterfly swimming event, and was the 2011 World silver medalist at that distance.
Francesca Jean Halsall is a retired English competitive swimmer who has represented Great Britain at the Olympics, FINA world championships, and European championships, and England at the Commonwealth Games. She competed primarily in freestyle and butterfly events.
Jiao Liuyang is a Chinese swimmer, who specializes in the 200-metre butterfly.
Gabriella Machado e Silva is a Brazilian butterfly swimmer and Olympian. As of October 2008, she was the South American and Brazilian record holder in the long-course 100-metre butterfly.
Ellie Victoria Cole, is an Australian retired Paralympic swimmer and wheelchair basketball player. After having her leg amputated due to cancer, she trained in swimming as part of her rehabilitation program and progressed more rapidly than instructors had predicted. She began competitive swimming in 2003 and first competed internationally at the 2006 IPC Swimming World Championships, where she won a silver medal. Since then, she has won medals in the Pan Pacific Swimming Championships, the Commonwealth Games, the Paralympic Games, the IPC Swimming World Championships, and various national championships. Following the 2012 London Paralympics, where she won four gold and two bronze medals, Cole underwent two shoulder reconstructions and made a successful return to swimming at the 2015 IPC Swimming World Championships, winning five medals, including three golds. She subsequently represented Australia at the 2016 Rio de Janeiro Paralympics, the 2018 Commonwealth Games, and the 2020 Tokyo Paralympics. In claiming her seventeenth Paralympic medal in Tokyo, Cole became Australia's most decorated female Paralympian with six gold, five silver and six bronze medals from four Paralympic Games.
Alicia Jayne Coutts, is an Australian competitive medley, butterfly and freestyle swimmer. She represented Australia at the 2008 Summer Olympics, 2012 Summer Olympics and the 2010 Commonwealth Games. She was a Swimming Australia National Training Centre scholarship holder and was coached by John Fowlie. Her haul of five medals at the 2012 Summer Olympics matches fellow Australians Ian Thorpe and Shane Gould in one single Olympics, and trails only Emma McKeon’s seven.
Teigan Van Roosmalen is an Australian Paralympic S13 swimmer. She has Usher Syndrome type 1 legally blind and Profoundly deaf. She had a swimming scholarship from the Australian Institute of Sport 2009-2012. Her events are the 100 m breaststroke, 200 m individual medley, 50 m and 100 m freestyle. She competed at the 2011 Para Pan Pacific Championships in Edmonton, where she won a gold medal in the S13 400 freestyle event. She competed at the 2008 Summer and 2012 Summer Paralympics.
Daynara Lopes Ferreira de Paula is a Brazilian butterfly swimmer.
Brittany Joyce Elmslie, is a former Australian competitive swimmer. She represented Australia at the 2012 and 2016 Summer Olympics in swimming, and won a gold medal in the 4 × 100 m freestyle relay at both Games.
Katheryn Meaklim is a South African swimmer who mainly competes in the Women's 200 and 400 m individual medley.
Katerine Savard is a Canadian competitive swimmer who specializes in women's butterfly events and freestyle relay. She holds several Canadian national records in the butterfly over the 50-, 100-, and 200-metre distances in both the short and long courses. Savard also holds the Canadian junior butterfly record in the 200-metre event. She won the gold medal at the 100-metre butterfly event at the 2013 Summer Universiade, held in Kazan. Savard also won gold at the 2014 Commonwealth Games in the 100-metre butterfly in Glasgow, where she set the Commonwealth record in the process. At the same games, she won a bronze medal as a member of the women's 4×100-metre medley relay team.
Amit Ivry is an Israeli Olympic swimmer, Maccabiah Games champion, and national record holder. She competes in the butterfly, backstroke, breaststroke, and medley.
Alexandra Wenk is a German swimmer who competes in the Women's 100 metre butterfly. At the 2012 Summer Olympics, she finished 21st overall in the heats in the Women's 100 metre butterfly and failed to reach the final. At the 2016 Summer Olympics in Rio de Janeiro, she finished in 21st place in the women's 100 m butterfly and did not qualify for the semifinals. She competed in the women's 200 m medley where she finished 11th in the semifinals and did not qualify for the final. She was also a member of the women's 4 × 100 m medley relay team which finished 12th in the heats and did not qualify for the final.
Denisa Smolenová is a Slovak swimmer who competes in the women's butterfly. At the 2012 Summer Olympics she finished 28th overall in the heats in the women's 100 metre butterfly and failed to reach the final. She also competed in the 200 m butterfly, again not making the final. She had previously competed in the 200 m butterfly at the 2008 Summer Olympics.
Kristel Vourna is a Greek swimmer. At the 2012 Summer Olympics in London, she competed in the Women's 100 metre butterfly. She took the 12th place overall, finishing 7th in the second semifinal in the 100 metre butterfly with a Greek record of 58.31 seconds. She also swam the anchor leg of Greece's 4 x 100 freestyle relay, but the team failed to qualify for the final, finishing in the 16th place.
Adzo Rebecca Kpossi is a Togolese swimmer who specialises in butterfly and freestyle. Kpossi competed in both the 2012 and 2016 Summer Olympics. At both of her Olympics, she competed in the 50 metre freestyle. She has also competed in two World Championships, a World Short Course Championship and an African Games.
Daiene Marçal Dias is a Brazilian competitive swimmer.
Louise Maria Hansson is a Swedish competitive swimmer, a member of Helsingborgs SS.
Belgium 
