A water polo tournament was held on the Seine on 11 and 12 August 1900 as part of the 1900 Summer Olympics. Eight teams from four countries, all European, entered the event, although only seven ended up playing. The Osborne Swimming Club of Manchester, England, which has been listed with two rosters that are nearly entirely different, became the first Olympic water polo champions by defeating the Brussels Swimming and Water Polo Club of Belgium. Third place went to the two French-based semi-finalists, Libellule de Paris and Pupilles de Neptune de Lille, the latter of whom entered two teams, but merged them together after the first round.
Đurđa "Đurđica" Bjedov is a retired Croatian swimmer and the only Yugoslav Olympic champion in swimming.
Otto Wahle was an Austrian-American swimmer who took part in two Summer Olympic Games and won a total of three medals. Wahle coached the men's US swim team at the 1912 Olympics, and the men's US water polo team at the 1920 and 1924 Olympics.
Caitlin Leverenz Smith is an American competition swimmer who specializes in breaststroke and medley events. She won the bronze medal in the 200-meter individual medley event at the 2012 Summer Olympics.
Kylie Jayne Palmer, OAM, is an Australian distance freestyle swimmer.
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.
Lia Neal is a former American professional swimmer who specialized in freestyle events. In her Olympic debut at the 2012 Summer Olympics in London, she won a bronze medal in the 4×100-meter freestyle relay. In 2016, she won a silver medal in the same event at Rio de Janeiro. She was the second female African-American swimmer to make a U.S. Olympic team.
Sophie Marie Reine Kamoun is a French former swimmer who competed in the 1984 Summer Olympics.
Aimee Willmott is an English competitive swimmer who has represented Great Britain at the Olympic Games, FINA world championships and European championships, and England in the Commonwealth Games. She was the 2018 Commonwealth Games champion in the 400 metres individual medley.
Pernille Blume is a Danish former 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.
Charlotte Bonnet is a French swimmer, who won a bronze medal at the 2012 Summer Olympics. Bonnet was born in Enghien-les-Bains, Paris. Her 4 × 200 m freestyle team won the bronze medal in a time of 7:47.49.
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.
Aurélie Muller is a French swimmer, who specializes in long-distance freestyle events and open water marathon. She won the 10-kilometer competition at the 2015 world championship in Kazan, Russia and at the 2017 world championship in Budapest, Hungary.
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.
Kira Marije Toussaint is a Dutch competitive swimmer who specialises in backstroke. She is the former world record holder in the short course 50 metre backstroke and the Dutch record holder in the long course 50 metre backstroke and 100 metre backstroke, and the short course 50 metre, 100 metre, and 200 metre backstroke. She also holds the European record in the long course and short course 50 metre backstroke. At the 2021 FINA Swimming World Cup, Toussaint placed second overall for a competitor of any gender in terms of total points scored and earned 11 gold medals.
Béryl Émilie Paulette Gastaldello is a French swimmer.
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.
Anna Ntountounaki is a Greek swimmer, competing for Panathinaikos on club level.
Martina Carraro is an Italian swimmer. She competed at the 2020 Summer Olympics, in 100 m breaststroke and 200 m breaststroke. She was European champion in short course in the 100 m breaststroke at the 2019 European Short Course Swimming Championships in Glasgow, Scotland.
Leah Neale is an Australian competitive swimmer currently swimming for DC Trident at the International Swimming League. She competed at the 2016 Summer Olympics where she won a silver medal in the 4 × 200 metre freestyle relay. In the same event at the 2018 Commonwealth Games she won a gold medal.
