László Cseh is a retired Hungarian competitive swimmer and six-time Olympic medalist. He is a 33-time European Champion. His father, László Cseh Sr., also represented Hungary at the Olympics in swimming. In 2020 Braden Keith of SwimSwam nominated him as number 1 within top 10 male swimmers who have never won Olympic gold.
Kathryn Elise Hoff is a former American competitive swimmer, she is an Olympic medalist, and former world record-holder. Hoff was known for her success in the 200-meter and 400-meter individual medley. She represented the United States at the 2004 Summer Olympics and 2008 Summer Olympics, in which she was awarded a silver medal and two bronze medals.
Jakob Jóhann Sveinsson is a 4-time Olympic swimmer from Iceland who started swimming for S.C. Ægir in 1991. He swam for Iceland at the 2000, 2004, 2008 and 2012 Summer Olympics.
Oussama "Ous" Mellouli is a Tunisian swimmer who competes in the freestyle and medley events. He is a three-time Olympic medalist, is an African record holder, and trains with the USC Trojans team based at the University of Southern California, where he studied as a computer science undergraduate and swam collegiately.
Hannah Jane Arnett Wilson is a Hong Kong retired amateur swimmer. She is a three-time Olympic swimmer for Hong Kong, having swum at the 2004 Summer Olympics in Athens, 2008 Summer Olympics in Beijing, and 2012 Summer Olympics in London. She has won two career Universiade gold medals. As of July 11, 2009, Wilson currently holds 10 Hong Kong records and two Universiade records in swimming.
Anastasia Valeryevna Fesikova, née Anastasia Zuyeva, is a Russian swimmer who holds the Russian national records for the 50, 100 and 200 metres backstroke events. She swam for Russia at the 2008 Olympics, the 2012 Olympics and the 2016 Olympics. At the 2012 Olympic Games, she won a silver medal in the 200 m backstroke.
Robin van Aggele is an Olympic and national-record-holding swimmer from the Netherlands and the most all-round Dutch swimmer since Marcel Wouda.
Elizabeth Lyon Beisel is an American competition swimmer who specializes in backstroke and individual medley events. Beisel placed second in the 400m individual medley at the 2016 US Olympic Swimming Trials, qualifying for her third Olympic team. She has won a total of nine medals in major international competition, four gold, one silver, and four bronze spanning the Olympics, World Aquatics, and the Pan Pacific championships. Beisel competed in the 200-meter backstroke and 400-meter individual medley events at the 2008 Summer Olympics, placing fifth and fourth, respectively, in the world. She won the silver medal in the 400-meter individual medley and bronze in the 200-meter backstroke at the 2012 Summer Olympics.
Takeshi Matsuda is a retired Japanese Olympic, Asian and National Record holding swimmer. He swam for Japan at the 2004, 2008 Olympics, 2012 Olympics, and 2016 Olympics, winning four medals. At the 2008 Olympics, he won a bronze medal in the men's 200 m butterfly in an Asian Record of 1:52.97; in doing so, he also set the Japanese Record in the event. On November 12, 2011, Matsuda set a new Japanese record (1:49.50) at the FINA World Cup for the short course 200 m butterfly. In doing so, he became just the third swimmer in history to break the 1:50 barrier for the event.
Allison Rodgers Schmitt is an American competition swimmer who specializes in freestyle events. She is a four-time Olympian and a ten-time Olympic medalist.
David Walters, also known as Dave Walters, is an American former competition swimmer, Olympic gold medalist, and world record-holder in the 4x200 meter freestyler relay. At the 2008 Summer Olympics, Walters earned a gold medal by swimming in the heats of the 4×200-meter freestyle relay. As part of the American team, he also formerly held the world record in the 4×100-meter medley relay. Walters is also a seven-time medalist at the World Aquatics Championships.
Anu Elisa Koivisto is a 2-time Olympic swimmer from Finland. She swam for Finland at the 1996 and 2000 Olympics. During her swimming career, she swam to multiple Finnish championships and national records.
Michael Fred Phelps II is an American former competitive swimmer. He is the most successful and most decorated Olympian of all time with a total of 28 medals. Phelps also holds the all-time records for Olympic gold medals (23), Olympic gold medals in individual events (13), and Olympic medals in individual events (16). At the 2004 Summer Olympics in Athens, Phelps tied the record of eight medals of any color at a single Games, held by gymnast Alexander Dityatin, by winning six gold and two bronze medals. Four years later, when he won eight gold medals at the 2008 Beijing Games, he broke fellow American swimmer Mark Spitz's 1972 record of seven first-place finishes at any single Olympic Games. At the 2012 Summer Olympics in London, Phelps won four gold and two silver medals, and at the 2016 Summer Olympics in Rio de Janeiro, he won five gold medals and one silver. This made him the most successful athlete of the Games for the fourth Olympics in a row.
Katinka Hosszú is a Hungarian competitive swimmer specialized in individual medley events. She is a three-time Olympic champion and a nine-time long-course world champion. She is owner of a Budapest based swim school and swim club called Iron Swim Budapest, and co-owner and captain of Team Iron, founding member of the International Swimming League.
Adriana Rebeca Marmolejo Vargas is a 3-time Olympic and national record-holding swimmer from Mexico. She swam at the 2000, 2004 and 2008 Olympics, making her the first Mexican woman to swim at 3 Olympic Games. She has held the Mexican Records in the 50, 100 and 200 breaststrokes since 1998.
Nimrod Shapira is an Israeli two-time Olympic swimmer, having represented Israel at the 2008 Olympics in the 100 meter and 200 meter freestyle, and in the 200 m freestyle for Israel at the 2012 Summer Olympics.
Guy Marcos Barnea is an Israeli swimmer who represented Israel at the 2008 Summer Olympics, and has won three medals at the European Championships. As of March 2016, he held the Israeli records in the long course 50m backstroke (24.64), the short course 50m backstroke (23.27), and the long course 100m butterfly (51.36).
Ye Shiwen is a Chinese swimmer. At the 2012 Summer Olympics, she won gold medals in the 400 metres and 200 metres individual medley, breaking the world record in the 400 m event and the Olympic record in the 200 m event.
Daniele Tirabassi is a Venezuelan swimmer, who specialized in long-distance freestyle events. He represented his nation Venezuela at the 2008 Summer Olympics, and has also won a career total of five medals in a major international competition, spanning two editions of the South American Games and the 2010 Central American and Caribbean Games. Tirabassi also holds multiple Venezuelan championship titles and national records in both the long-distance freestyle, and freestyle relay events.
Sindri Thor Jakobsson is a Norwegian swimmer of Icelandic origins. He specialises in the butterfly.
Norway 
