Ryan John Pini MBE is a 4-time Olympic swimmer from Papua New Guinea. He swam for PNG at the 2004, 2008, 2012, and 2016 Olympics; also serving as the PNG flagbearer in 2008 and 2016. He is the first PNG swimmer ever to reach an Olympic final.
Mireia Belmonte García is a Spanish Olympic, world, and European champion swimmer. She is the world record holder in the short course 200 metre butterfly and 400 metre individual medley. Formerly, she held the world record in the short course 400 metre freestyle, 800 metre freestyle, and 1500 metre freestyle. She was the first Spanish woman to win a gold medal in swimming at an Olympic Games and is widely considered to be the greatest Spanish swimmer of all time.
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.
Joseph Isaac Schooling is a Singaporean former professional swimmer who specialised in butterfly, freestyle, and medley events. He was the gold medalist in the 100m butterfly at the 2016 Olympics, achieving Singapore's first ever Olympic gold medal. His winning time of 50.39s broke multiple records at the National, Southeast Asian, Asian, and Olympic levels.
Quah Zheng Wen is a Singaporean professional swimmer who specialises in individual medley, backstroke, butterfly and freestyle events.
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.
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 competes for the Energy Standard Swim Club in the International Swimming League.
Talita Baqlah is a Jordanian swimmer who has competed in three consecutive Olympic games, in the 2012, 2016 and 2020 Summer Olympics.
Sebastien Daniel Rousseau is a competition swimmer who has represented South Africa in three Summer Olympics and other international swimming championships. He is married to Holly.
Albert Christiadi Sutanto is an Indonesian former swimmer, who specialized in butterfly and medley events. He is a two-time Olympian, and multi medalist 9 Gold 5 Silver and 16 Bronze at the Southeast Asian Games.
Felix Christiadi Sutanto is a retired Indonesian swimmer, who specialized in individual medley events. He represented Indonesia, along with his twin brother Albert, at the 2000 Summer Olympics, and later received a total of sixteen All-American titles at the NAIA Men's Swimming and Diving Championships, while studying in the United States. Because of his tremendous career in college swimming, Sutanto was named the 2002 and 2003 Most Outstanding Male Swimmer of the Year by the National Association of Intercollegiate Athletics (NAIA).
Indonesia competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's fifteenth appearance at the Summer Olympics.
Tanzania competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. Seven athletes, five men and two women, competed in five events across three sports, but did not win any medals. Hilal Hemed Hilal, however, set a new national record in the men's 50 m freestyle event. Four athletes took part in track and field athletics, all in marathons, while two participated in the swimming tournament's 50 m freestyle category. The flagbearer for the opening ceremony was Andrew Thomas Mlugu, who was Tanzania's first Olympic judoka. His counterpart in the closing ceremony was Alphonce Felix Simbu, who had earned the nation's best finish at the Games by placing fifth in the men's marathon. Prior to these Games, Tanzania had sent athletes to twelve editions of the Summer Olympics.
Joseph "Gunnar" Bentz is an American former competitive swimmer and Olympic gold medalist.
Yusra Mardini OLY is a Syrian former competition swimmer and refugee of the Syrian civil war. She was a member of the Refugee Olympic Athletes Team (ROT) that competed under the Olympic flag at the 2016 Summer Olympics in Rio de Janeiro. On 27 April 2017, Mardini was appointed a UNHCR Goodwill Ambassador. She also competed in the 2020 Summer Olympics in Tokyo with the Refugee Olympic Team (EOR). She was named one of the 100 most influential people in the world by Time magazine in 2023, alongside her sister, Sarah.
The Refugee Olympic Team competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016, as independent Olympic participants.
Helena Gasson is a New Zealand Olympic swimmer representing her country at the 2016 Rio Olympic Games. She has also competed internationally at the 2015 World University Games, the 2017 World Swimming Championships and the 2018 Commonwealth Games. Helena is currently part of the Coast Swim Club Elite Team and the LA Current in the ISL.
Marie Wattel is a French swimmer. She competed in the women's 100 metre butterfly event at the 2016 Summer Olympics. She qualified to represent France at the 2020 Summer Olympics. At the 2022 World Aquatics Championships, she won the silver medal in the 100 metre butterfly with a time of 56.14 seconds.
Long Yuan Miguel Gutiérrez Feng is a Mexican-American swimmer. He competed for Mexico in the men's 100 metre butterfly event at the 2016 Summer Olympics; his time of 53.34 seconds in the heats did not qualify him for the semifinals.
Indonesia 
