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.
Sarah Fredrika Sjöström is a Swedish competitive swimmer specialising in the sprint freestyle and butterfly events.
Chad Guy Bertrand le Clos, OIS is a South African competitive swimmer who is an Olympic, World and Commonwealth Games champion. He is the African record, Commonwealth record, and South African record holder in the short course and long course 200-metre butterfly and the short course 100-metre butterfly. He also holds the African records and South African records in the long course 200-metre freestyle and 100-metre butterfly, and the short course 100-metre freestyle. Formerly, he was a world record holder in the short course 100-metre butterfly and 200-metre butterfly.
Thomas Allen Shields is an American competitive swimmer. He is a two-time Olympian and the current American record-holder in the short course 50-meter butterfly and 200-meter butterfly. At the 2016 Summer Olympics, he won a gold medal in the 4×100-meter medley relay, swimming the butterfly leg of the relay in the prelims. Later the same year, he became the first American to swim faster than 44 seconds in the 100-yard butterfly, setting a new American record of 43.84 seconds.
The women's 100 metre butterfly event at the 2012 Summer Olympics took place on 28–29 July at the London Aquatics Centre in London, United Kingdom.
Bronte Campbell is a Malawian-born Australian competitive swimmer, a dual Olympic gold-medal winner and world champion. Her older sister, Cate, is also a competitive swimmer, and once held world records in both the short and long course 100 metre individual freestyle events. Bronte and Cate are the first Australian siblings on the same Olympic swimming team since the 1972 Olympics and the first Australian sisters ever to compete within the same swimming event at the Olympics. Bronte Campbell won three gold medals at the 2015 World Championships, including the 50 and 100 metre freestyle events.
The women's 100 metre butterfly event in swimming at the 2013 World Aquatics Championships took place on 28–29 July at the Palau Sant Jordi in Barcelona, Spain.
Simone Ashley Manuel is an American professional swimmer specializing in freestyle events. At the 2016 Rio Olympics, she won two gold and two silver medals: gold in the 100-meter freestyle and the 4×100-meter medley, and silver in the 50-meter freestyle and the 4×100-meter freestyle relay. In winning the 100-meter freestyle, a tie with Penny Oleksiak of Canada, Manuel became the first Black American woman to win an individual Olympic gold in swimming and set an Olympic record and an American record. At the 2020 Tokyo Olympics, she won a bronze medal as the anchor of the American 4×100-meter freestyle relay team.
Emma Jennifer McKeon, is an Australian competitive swimmer. She is an eight-time world record holder, three current and five former, in relays. 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 20 medals, including five gold medals, at the World Aquatics Championships; and a record 20 medals, including 14 gold, at the Commonwealth Games.
Chen Xinyi is a Chinese competitive swimmer, swimming freestyle, butterfly and individual medley.
Abbigail "Abbey" Weitzeil is an American competition swimmer specializing in sprint freestyle. A multiple time Olympic medalist, she won a gold medal in the 4x100-meter medley relay for swimming in the preliminary heats and a silver medal in the 4x100-meter freestyle relay at the 2016 Rio Olympics. At the 2020 Summer Olympics she won a silver medal in the 4x100-meter medley relay and a bronze medal in the 4x100-meter freestyle relay, swimming in the final of both events. She is the American record holder in the 50-yard freestyle and is part of the American Record in the 4x100-meter freestyle relay.
The women's 100 metre freestyle event at the 2016 Summer Olympics took place between 10–11 August at the Olympic Aquatics Stadium.
The women's 200 metre freestyle event at the 2016 Summer Olympics took place 8–9 August at the Olympic Aquatics Stadium.
Kelsi Worrell Dahlia is a former American competitive swimmer specializing in butterfly and freestyle events. At the 2018 World Championships, Dahlia won nine total medals of which seven were gold medals. She qualified for the 2016 Rio Olympics in the 100-meter butterfly and won a gold medal in the 4 x 100-meter medley relay for swimming in the heats.
Penelope Oleksiak is a Canadian competitive swimmer. Her country's most decorated Olympian, Oleksiak rose to fame during the 2016 Summer Olympics, where she became the first Canadian to win four medals in the same Summer Games, and the country's youngest Olympic champion with her gold medal win in the 100 m freestyle. She was the first athlete born in the 2000s to claim an Olympic gold medal in an individual event. Her success led to her being awarded the 2016 Lou Marsh Trophy as Canada's top athlete, the Bobbie Rosenfeld Award as Canada's top female athlete for 2016, and a member of the Canadian Press team of the year. Five years later she won three additional medals at the 2020 Summer Olympics, breaking the national record for Olympic medals.
The women's 100 metre freestyle event at the 2020 Summer Olympics was held from 28 to 30 July 2021 at the Tokyo Aquatics Centre. It was the event's twenty-fifth consecutive appearance, having been held at every edition since 1912.
Hannah Margaret McNair "Maggie" Mac Neil is a Canadian competitive swimmer. A 100 metre butterfly event specialist, she is the 2020 Olympic champion, 2019 World (LC) champion, two-time World (SC) champion, 2022 Commonwealth champion, and 2023 Pan American champion. She holds the current Americas record (55.59s), the short course world record, the Commonwealth record, and Pan American record in the event.
Victoria "Torri" Huske is an American swimmer. She is the current American record holder in both the 100-meter butterfly and the 50-meter butterfly. At the 2022 Fina World Swimming Championships in Budapest, Hungary, Huske, just 19, became one of only four American women in history to win six medals at a World Championships.
