The men's 4×100 metre freestyle relay took place on 15 August at the Olympic Aquatic Centre of the Athens Olympic Sports Complex in Athens, Greece.
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.
The men's 200 metre individual medley event at the 2004 Olympic Games was contested at the Olympic Aquatic Centre of the Athens Olympic Sports Complex in Athens, Greece on August 18 and 19.
The men's 4×100 meter medley relay took place on 20–21 August at the Olympic Aquatic Centre of the Athens Olympic Sports Complex in Athens, Greece.
Michael George Klim, OAM is a Polish-born Australian swimmer, Olympic gold medallist, world champion, and former world record-holder of the 1990s and 2000s. He is known as the creator of straight arm freestyle.
Ian Lowell Crocker is an American former competition swimmer, five-time Olympic medalist, and former world record-holder. During his career, he set world records in the 50- and 100-meter butterfly and the 100-meter freestyle. He has won a total of twenty-one medals in major international competition, spanning the Olympics, the FINA World Aquatics Championships, and the Pan Pacific Swimming Championships. He coached for many years at the Western Hills Athletic Club and has helped coach the Longhorns swim camp in 2019 as well as other years. Since Spring of 2022 when the new facility opened, Crocker coaches at the Western Aquatics and Social Club at the Eanes Independent School District Aquatics center.
Milorad "Milo" Čavić is a Serbian former professional swimmer. He won a silver medal in the 100-meter butterfly at the 2008 Summer Olympics in a historic race with American swimmer Michael Phelps. Čavić also was World and European champion, as well as world record holder. He is one of four swimmers who broke 50 seconds in the 100m butterfly.
The men's 4 × 100 metre medley relay event at the 2008 Olympic Games took place on 15 and 17 August at the Beijing National Aquatics Center in Beijing, China.
The men's 100 metre butterfly event at the 2008 Olympic Games took place on 14–16 August at the Beijing National Aquatics Center in Beijing, China.
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). When Phelps 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 2004 Summer Olympics in Athens, Phelps already tied the record of eight medals of any color at a single Games by winning six gold and two bronze medals. 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.
The men's 200 metre butterfly event at the 2012 Summer Olympics took place on 30–31 July at the London Aquatics Centre in London, United Kingdom.
Rimvydas Šalčius is a Lithuanian former swimmer, who specialized in butterfly events. He is a multiple-time Lithuanian champion, and a two-time national record holder in both the men's butterfly and medley relay events. He also set a junior record time of 53.25 seconds by winning the gold medal in the men's 100 m butterfly at the 2003 European Championships in Glasgow, Scotland.
Sotirios Pastras is a Greek former swimmer, who specialized in butterfly events. He is a multiple-time Greek champion and record holder in the butterfly. Pastras is a computer engineering graduate at University of Thessaly, and is currently a member of Nova Club in Volos, under the tutelage of his personal coach Nikolaos Prantzos.
Michal Rubáček is a Czech swimmer, who specialized in butterfly events. He is a two-time Olympian, and a multiple-time Czech national record holder for the butterfly events.
Jeong Doo-hee is a South Korean former swimmer, who specialized in butterfly events. He represented his nation South Korea at the 2004 Summer Olympics, and shared silver medals with Park Seon-kwan, Choi Kyu-woong, and Park Tae-hwan in the 4×100 m medley relay at the 2010 Asian Games in Guangzhou, China.
Eugene Botes is a South African former swimmer, who specialized in butterfly events. He became the first swimmer to represent his country South Africa in international tournaments, while playing for the Penn State Nittany Lions in his senior season. He also holds a dual citizenship between South Africa and the United States.
Aleksandar Miladinovski is a Macedonian former swimmer, who specialized in butterfly and individual medley events. He represented the Republic of Macedonia in two editions of the Olympic Games, and held five Macedonian records in the butterfly and individual medley.
Daniel O'Keeffe is a Guamanian former swimmer, who specialized in butterfly events. He is a two-time Olympian, and currently holds a Guamanian record in the 100-meter butterfly (55.05).
Aghiles Slimani is an Algerian former swimmer, who specialized in butterfly events. Slimani qualified for two swimming events at the 2004 Summer Olympics in Athens, by posting FINA B-standard entry times of 55.40 and 2:03.18 from the World Championships in Barcelona, Spain. In the 200 m butterfly, Slimani challenged seven other swimmers in heat two, including Olympic veteran Vladan Marković of Serbia. He raced to sixth place and thirty-first overall by 0.16 of a second behind Markovic in 2:04.93. In his second event, 100 m butterfly, Slimani placed forty-eighth on the morning's preliminaries. Swimming in heat three, he edged out Turkey's Onur Uras to take a seventh seed by fifteen hundredths of a second (0.15) in 56.22.
The men's 4 × 100 metre medley relay event at the 2016 Summer Olympics in Rio de Janeiro took place on 12–13 August at the Olympic Aquatics Stadium.
