Jason Edward Lezak is an American former competitive swimmer and swimming executive. As a swimmer, Lezak specialized in the 50-meter and 100-meter freestyle races. His pro career lasted for nearly fifteen years, spanning four Olympic games and eight Olympic medals.
Cullen Andrew Jones is an American former competition swimmer and Olympic gold medalist who specializes in freestyle sprint events. As part of the American team, he holds the world record in the 4×100-meter freestyle relay. At the 2012 Summer Olympics, he won silver medals in the 4 x 100-meter freestyle relay and the 50-meter freestyle, as well as the gold in the 4 x 100-metre medley.
César Augusto Cielo Filho is a Brazilian competitive swimmer who specializes in sprint events. He is the most successful Brazilian swimmer in history, having obtained three Olympic medals, winning six individual World Championship gold medals and breaking two world records.
Paul Biedermann is a German retired competitive swimmer, a 200 and 400 metre freestyle long course world champion. He holds the long course and short course world records in the 200 meters freestyle, and the long course world record in the 400 meters freestyle.
Nathan Ghar-jun Adrian is an American competitive swimmer and five-time Olympic gold medalist who formerly held the American record in the long course 50-meter freestyle event.
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.
David Harvey Dunford is a swimmer from Kenya who specializes in sprint freestyle. He is an African champion, Commonwealth Games finalist and the second Kenyan swimmer in history to qualify for the Olympic Games.
James Magnussen is a retired Australian swimmer and Olympic medallist. He was the 2011 and 2013 100-metre freestyle world champion, and holds the record for the fifth fastest swim in history in the 100-metre freestyle, with a time of 47.10, which until 2016 also stood as the fastest swim in textile swimwear material.
The Asian island nation of the Maldives competed at the 2012 Summer Olympics in London from 27 July to 12 August 2012. This was the nation's seventh consecutive appearance at the Olympics, the delegation consisted of two athletes each in track and field and swimming. For the first time since their debut at the Summer Olympics, the Maldives entered one badminton player into the Olympics. Mohamed Ajfan Rasheed, the inaugural Maldivian badminton player to compete at the Olympics, was the nation's flag bearer at the opening ceremony with Azneem Ahmed carrying the Maldivian flag in the closing ceremony. All the athletes qualified for the games through wild cards from International Association of Athletic Federations FINA and Badminton World Federation. The Maldives however, has yet to win its first ever Olympic medal.
Pernille Blume is a former Danish swimmer specializing in sprint freestyle events. She competed at the 2012 Summer Olympics. At the 2016 Summer Olympics she was the gold medalist in the women's 50 metre freestyle and won a bronze medal in the women's 4 × 100 metre medley relay where she swam the freestyle leg of the relay in both the prelims and the final. She also competed at the 2020 Summer Olympics, winning a bronze medal in the 50 metre freestyle.
Inés Remersaro Coronel is an Olympic backstroke swimmer from Uruguay.
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.
Bruno Giuseppe Fratus is a Brazilian competitive swimmer. He won a bronze medal in the 50-metre freestyle at the 2020 Summer Olympics in Tokyo. In July 2021, Fratus became the first swimmer in history to swim the long course 50 metre freestyle race in less than 22 seconds 90 times. He surpassed this mark by swimming his 100th sub-22 second 50 metre freestyle at the 19th World Aquatics Championships in June 2022.
Kristian Tsvetanov Gkolomeev is a Greek swimmer. He specializes in sprint freestyle and butterfly events.
Yauhen Mikalaevich Tsurkin is a Belarusian swimmer, who specialized in sprint freestyle and butterfly events.
Marcelo Chierighini is a Brazilian competitive swimmer. In the 100 metre freestyle, he was an Olympic finalist at the Rio 2016 Games, and four times in a row a finalist at the World Championships in 2013, 2015, 2017 and 2019. In the 4 x 100 metre freestyle relay, he holds a silver medal at the 2017 World Championships.
Corey Charles Garth Main is a New Zealand swimmer who qualified to compete at the 2016 Summer Olympics to be held in Rio de Janeiro, Brazil, in the men's 100 metre backstroke.
Martín Andrés Melconian Álvez is a Uruguayan swimmer. He competed in the men's 100 metre breaststroke event at the 2016 Summer Olympics. His brother Gabriel Melconian is also an Olympic freestyler swimmer.
Gabriel da Silva Santos is a Brazilian swimmer. He competed in the men's 4 × 100 metre freestyle relay event at the 2016 Summer Olympics, finishing 5th.
Ahmed Ayoub Hafnaoui is a Tunisian swimmer. He is the African record holder in the short course 800-metre freestyle and 1500-metre freestyle. He competed in the 2020 Summer Olympics, where he won a gold medal in the men's 400-metre freestyle. He ranked No. 16 in the world and was the slowest qualifier for the final race but won Olympic gold with a time of 3:43.36. Hafnaoui was the only Tunisian to win Olympic gold at Tokyo 2020.
Uruguay 
