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 and one of the most decorated swimmers of all time.
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 African and South African records in the long course 200-metre freestyle and 100-metre butterfly, as well as 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 four time Olympian, Campbell is a triple Olympic gold medallist and a former World Champion in the 50 and 100 m freestyle, having won both titles in 2015.
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 a retired Australian competitive swimmer. She is an eight-time world record holder, three current and five former, in relays. Her total career haul of 14 Olympic medals following the 2024 Olympic Games made her the most decorated Australian, the third-most decorated swimmer, and the seventh-most decorated athlete in Olympic history and included one gold medal from the 2016 Summer Olympics in Rio de Janeiro, four gold medals from the 2020 Summer Olympics in Tokyo and one gold medal from the 2024 Summer Olympics in Paris. 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 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.
The women's 100 metre freestyle event at the 2016 Summer Olympics took place between 10 and 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.
Caeleb Remel Dressel is an American competitive swimmer who specializes in freestyle, butterfly, and individual medley events. He swims representing the Cali Condors as part of the International Swimming League. He won a record seven gold medals at the 2017 World Aquatics Championships in Budapest, nine medals, six of which were gold, at the 2018 World Swimming Championships in Hangzhou, and eight medals, including six gold, at the 2019 World Aquatics Championships in Gwangju. Dressel is a nine-time Olympic gold medalist and holds world records in the 100 meter butterfly, 50 meter freestyle, and 100 meter individual medley.
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. Nicknamed "Magic Penny", she is one of her country's most decorated Olympians. 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; joined in 2024 by sprinter Andre De Grasse, with seven Olympic medals each.
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.
The women's 100 metre butterfly event at the 2020 Summer Olympics was held from 24 to 26 July 2021 at the Tokyo Aquatics Centre. It was the event's seventeenth consecutive appearance, having been held at every edition since 1956.
Hannah Margaret McNair "Maggie" Mac Neil is a Canadian former 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 short course world record, the Commonwealth record, and Pan American record in the event.
Victoria "Torri" Huske is an American competitive swimmer and the reigning Olympic champion in the 100-meter butterfly. She holds world records in two relays: the 4x100-meter medley and 4x100-meter mixed medley. She is the former American record holder in the 50- and 100-meter butterfly.
