The men's 100 metre breaststroke event at the 2004 Summer Olympics was contested at the Olympic Aquatic Centre of the Athens Olympic Sports Complex in Athens, Greece on August 14 and 15.
Kosuke Kitajima is a Japanese retired breaststroke swimmer. He won gold medals at the men's 100 m and 200 m breaststroke events at the 2004 Summer Olympics, and the 2008 Summer Olympics – becoming the first and only swimmer to sweep the breaststroke events at consecutive Olympic games.
Brendan Joseph Hansen is an American former competition swimmer who specialized in breaststroke events. Hansen is a six-time Olympic medalist, and is also a former world record-holder in both the 100-meter and 200-meter breaststroke events.
Vladislav Vitalyevich Polyakov is a Kazakhstani swimmer, who specialized in breaststroke events. He swam for his native Kazakhstan at three Olympic Games, and eventually finished fifth in both 100 and 200 m breaststroke at his official Olympic debut in Athens. In total, he has won eight medals in major international tournaments, including his first career gold from the 2006 FINA World Short Course Championships in Shanghai, China. While residing in the United States, Polyakov is a five-time SEC champion, a double NCAA titleholder, and a two-time gold medalist at the national championships. He also earned a total of twelve All-American titles while playing for the Alabama Crimson Tide from 2003 to 2007.
The men's 100 metre breaststroke event at the 2008 Summer Olympics took place on 9–11 August at the Beijing National Aquatics Center in Beijing, China.
The men's 200 metre breaststroke event at the 2008 Olympic Games took place on 12–14 August at the Beijing National Aquatics Center in Beijing, China.
Giedrius Titenis is a Lithuanian swimmer, who specialized in breaststroke events. He is a four-time Olympian, a multiple-time Lithuanian record holder in the men's breaststroke, and a double swimming champion in the same discipline at the 2011 Summer Universiade in Shenzhen, China. Titenis is also a member of Anykščiai Swimming Club, and is coached and trained by Žilvinas Ovsiukas.
The men's 200 metre breaststroke event at the 2012 Summer Olympics took place on 31 July and 1 August at the London Aquatics Centre in London, United Kingdom.
Nguyễn Hữu Việt was a Vietnamese swimmer who specialized in breaststroke events. He won a total of five medals, and set numerous records for both the 100 and 200 m breaststroke at the Southeast Asian Games (2003–2009).
Aleksandr Baldin is an Estonian former swimmer, who specialized in breaststroke events. He is a 15-time long-course Estonian swimming champion in the breaststroke, and a member of SK Garant in Tallinn, under the tutelage of his personal coach Dmitri Kapelin. Baldin also represented his nation Estonia in a breaststroke double at the 2004 Summer Olympics.
You Seung-hun is a South Korean former swimmer, who specialized in breaststroke events. He shared bronze medals with Sung Min, Jeong Doo-Hee, and Park Tae-Hwan in the 4 × 100 m medley relay (3:41.33) at the 2006 Asian Games in Doha, Qatar.
Ahmad Al-Kudmani is a Saudi Arabian former swimmer, who specialized in breaststroke events. He is a two-time Olympian and a multiple-time medalist at the Pan Arab Games.
Ben-Rachmiel Labowitch is a New Zealand former swimmer, who specialized in breaststroke events. Since his mother is a New Zealand citizen, Labowitch claims a dual citizenship which allowed him to try out and make the New Zealand Olympic team. Labowitch is also a former member of North Shore Swim Club under his coach Thomas Ensorg, and a graduate of Drury University in Springfield, Missouri, where he played for the Drury Panthers.
Daniel Tam Chi-kin is a Hong Kong former swimmer, who specialized in breaststroke events. He is a two-time Olympian, and a double finalist in the 100 and 200 m breaststroke at the 2002 Asian Games in Busan, South Korea. Tam is a member of the swimming team for SLA Sports Club, and is trained by an Australian-born coach Anthony Giorgi.
Christos Papadopoulos is a Greek swimmer, who specialized in breaststroke events. Papadopoulos qualified for the men's 100 m breaststroke at the 2004 Summer Olympics in Athens, representing the host nation Greece. He cleared a FINA B-standard entry time of 1:04.10 from a test event at the Athens Olympic Aquatic Centre. He challenged seven other swimmers on the fourth heat, including four-time Olympian Ratapong Sirisanont (Thailand), who was later disqualified for a false start. He touched out Senegal's Malick Fall to take a third spot by 0.07 of a second in 1:04.43. Papadopoulos failed to advance into the semifinals, as he placed thirty-ninth overall on the first day of preliminaries. At 2002 Balkan Games in Volos he won the gold medal with national record in 200 breaststroke (2.18.70). At the 2005 Mediterranean Games, he took 8th place in 200m breaststroke.
Jean Luc Razakarivony is a Malagasy former swimmer, who specialized in breaststroke events. He is a three-time Olympian, a multiple-time Malagasy record holder in the 100 and 200 m breaststroke, and a member of Genève Natation 1885, based in Geneva, Switzerland.
Yevgeny Petrashov is a Kyrgyzstani former swimmer, who specialized in breaststroke events. He is a three-time Olympian, and a former Kyrgyzstan record holder in both 100 and 200 m breaststroke.
Eric Williams is a Nigerian former swimmer, who specialized in breaststroke events. He represented Nigeria at the 2004 Summer Olympics, and in all three editions of the FINA World Championships since 2003.
Chisela Kanchela was a Zambian swimmer, who specialized in breaststroke events. He currently holds numerous Zambian age group records in all breaststroke distances, and is trained for the All Saints' College swimming team in Perth, Western Australia ever since he first appeared at the Olympics. Kanchela also competed at the Commonwealth Games in 2002 and 2006, but failed to reach the top 16 final.
Amar Shah is a Kenyan former swimmer who specialized in breaststroke, but also competed in the freestyle relays. He is a single-time Olympian (2004), and a two-time swimmer at the Commonwealth Games. Shah qualified for the semifinals in 2010 Commonwealth Games setting a national record in the 50m breaststroke in a time of 30.53. He currently holds three long-course Kenyan records in the 50, 100 and 200 m breaststroke. Shah also won a total of bronze medals, as a member of the Kenyan swimming team, in the freestyle and medley relays at the 2011 All-Africa Games in Maputo, Mozambique.
