The women's 400 metre freestyle event at the 2004 Olympic Games was contested at the Olympic Aquatic Centre of the Athens Olympic Sports Complex in Athens, Greece on August 15.
The women's 100 metre butterfly event at the 2004 Olympic Games was contested at the Olympic Aquatic Centre of the Athens Olympic Sports Complex in Athens, Greece on August 14 and 15.
The men's 200 metre butterfly event at the 2004 Olympic Games was contested at the Olympic Aquatic Centre of the Athens Olympic Sports Complex in Athens, Greece on August 16 and 17.
Otylia Jędrzejczak is a Polish swimmer. She was the Olympic champion from 2004 Athens in the 200 metre butterfly. She finished 4th in this event in the 2008 Summer Olympics in Beijing, and also swam at the 2000 Summer Olympics in Sydney. In Athens 2004 she also silvered in 400 m freestyle and 100 m butterfly. Three times she broke the world record in the women's 200 m butterfly.
Poland competed at the 2004 Summer Olympics in Athens, Greece, from 13 to 29 August 2004. This was the nation's eighteenth appearance at the Summer Olympics, except the 1984 Summer Olympics in Los Angeles, because of the Soviet boycott. The Polish Olympic Committee sent a total of 194 athletes to the Games, 132 men and 62 women, to compete in 21 sports. Men's volleyball was the only team-based sport in which Poland had its representation in these Olympic Games. There was only a single competitor in women's taekwondo.
Leisel Marie Jones, OAM is an Australian former competition swimmer and Olympic gold medallist. A participant in the 2000 Summer Olympics – at just 15 years old – and 2004 Summer Olympics, she was part of gold-medal-winning Australian team in the women's 4×100-metre medley relay at the Athens Games in 2004 and a gold medallist for 100-metre breaststroke in the 2008 Summer Olympics in Beijing.
Jessicah Lee Schipper OAM is an Australian former competition swimmer. Specialising in the 100 and 200 metres butterfly, she won several gold medals at the Olympic Games and the World Championships between 2004 and 2009.
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.
The women's 200 metre butterfly event at the 2000 Summer Olympics took place on 19–20 September at the Sydney International Aquatic Centre in Sydney, Australia.
Ellen May Gandy, also known by her nickname Elly Gandy, is a British-born Australian former female butterfly swimmer. She represented Great Britain and England until 2012, and had almost all of her elite-level success under those flags. She represented Great Britain at the 2008 Summer Olympics and 2012 Summer Olympics in the 200m butterfly swimming event, and was the 2011 World silver medalist at that distance.
The women's 400 metre freestyle event at the 2008 Olympic Games took place on 10–11 August at the Beijing National Aquatics Center in Beijing, China.
The women's 200 metre butterfly event at the 2008 Olympic Games took place on 12–14 August at the Beijing National Aquatics Center in Beijing, China.
The women's 200 metre butterfly event at the 2012 Summer Olympics took place on 31 July and 1 August at the London Aquatics Centre in London, United Kingdom.
Birgit Koschischek is an Austrian swimmer, who specialized in sprint freestyle and butterfly events. She is a two-time Olympian, a four-time Austrian long and short course record holder, and a member of Schwechat Swimming Club in Schwechat, under her personal coach Adam Thoroczkay.
Liliána Szilágyi is a Hungarian swimmer, who specialized in the butterfly events.
Mariya Alekseyevna Bulakhova is a Russian former swimmer, who specialized in butterfly events. She collected two medals, gold and silver, in the 100 (59.98) and 200 m butterfly (2:10.60) at the 2004 European Junior Swimming Championships in Lisbon, Portugal. Bulakhova is a member of Volga Swimming Club, and is coached and trained by Natalia Kozlova.
Darya Viktorovna Parshina is a Russian former swimmer, who specialized in long-distance freestyle events. She set a junior European record of 4:10.79 to claim the 400 m freestyle title at the 2004 European Junior Swimming Championships in Lisbon, Portugal. She is a member of the Penza Army Sports Club, and is trained by her long-time coach and mentor Natalia Kozlova.
Vesna Stojanovska is a Macedonian former swimmer, who specialized in freestyle and butterfly events. She is a two-time Olympian, and holds multiple age-group records in 200 and 400 m freestyle, and in 50, 100, and 200 m butterfly. Regarded as one of Macedonia's top swimmers, Stojanovska has earned All-American honors and numerous Atlantic Coast Conference titles in her own discipline while studying in the United States.
Mei Yen “Christel” Bouvron is a Singaporean former swimmer, who specialised in freestyle and butterfly events. She is a two-time Olympian, a double finalist at the Asian Games (2002), and a gold medalist in the 200 m butterfly at the Southeast Asian Games (2003). Bouvron also became the first swimmer to qualify for the Olympics since 1920, while training for the Fighting Irish, and majoring in anthropology and classics at the University of Notre Dame in South Bend, Indiana.
Hsieh Shu-tzu is a Taiwanese former swimmer, who specialized in butterfly and individual medley events. She represented Chinese Taipei in two editions of the Olympic Games, and later captured a silver in the 200 m butterfly at the 2000 Asian Swimming Championships in Busan, South Korea.
