Cycling at the 2004 Summer Olympics consisted of 18 events in three disciplines:
Ryan Neville Bayley OAM is an Australian professional track cyclist and double Olympic gold medallist.
Sir Christopher Andrew Hoy MBE is a former track cyclist and racing driver from Scotland who represented Great Britain at the Olympic and World Championships and Scotland at the Commonwealth Games.
Luke Justin Roberts is a sports director and former Australian racing cyclist specialising in both track cycling and road bicycle racing.
Josiah Ng Onn Lam is a retired Malaysian professional track cyclist.
Jason Paul Queally is an English track cyclist. He won a gold medal at the 2000 Olympics in Sydney.
Shane John Kelly OAM is a former professional Australian track racing cyclist. Kelly specialized in the men's 1000 m time trial, commonly known as the Kilo. Kelly announced his retirement from international competition at the end of the 2008 Beijing Summer Olympics. Kelly is now working in motivational speaking, team building, and cycling fitness and training programs.
Jamie Alan Staff MBE is an English racing cyclist and coach, formerly on BMX and later on the track. A World and Olympic champion, he has also won numerous other medals at World Championships, World Cups and at the Commonwealth Games.
Gregory Henderson is a New Zealand former professional track and road racing cyclist, who rode professionally between 2002 and 2017. His career includes winning the 15-kilometre (9.3-mile) scratch race at the 2004 world championships and, in road cycling, winning the points competition at the Tour de Georgia in 2005 and 2008.
Martin Wayne Nothstein is an American former professional road bicycle racer and track cyclist. He is a three-time world champion in track events and an Olympic gold and silver medalist. Nothstein also servied as a Lehigh County Commissioner and ran unsuccessfully as the Republican Party nominee for the 2018 United States House of Representatives election in Pennsylvania's 7th congressional district and Pennsylvania's 15th district special election.
Craig MacLean MBE is a Scottish track cyclist who represented Great Britain and Northern Ireland at the 2000 Summer Olympics in Sydney and the 2004 Summer Olympics in Athens, winning a silver medal in the Team Sprint at the 2000 Olympics. As a sighted guide, MacLean returned to the sport in its Paralympic form, piloting Neil Fachie to two gold medals in the 2011 UCI Para-cycling Track World Championships, and Anthony Kappes to a gold medal in the 2012 Paralympic Games. MacLean is only the second athlete, after Hungarian fencer Pál Szekeres, ever to win medals at both the Olympic and Paralympic Games.
Arnaud Tournant is a French track cyclist. He has won 14 World Championships and won a gold, silver and a bronze at the Summer Olympics. In track cycling, he is second only to Sir Chris Hoy (17) in the number of global gold medals in his palmares.
Edward Franklin Clancy is a British former professional track and road bicycle racer, who competed between 2004 and 2021.
Hayden Roulston is a former New Zealand professional racing cyclist. He won the silver medal in the men's 4000 m individual pursuit and a bronze medal in the men's 4000 m team pursuit at the 2008 Summer Olympics in Beijing. He won the New Zealand road cycling championships on four occasions, the Tour of Southland on three occasions and came tenth in the 2010 edition of Paris - Roubaix.
Grégory Baugé is a French professional racing cyclist.
Sir Jason Francis Kenny, is an English former track cyclist, specialising in the individual and team sprints. Kenny is the holder of most Olympic gold medals (7) and medals (9) for a British athlete. Kenny's seven Olympic gold medals place him joint 15th by reference to gold medals won in the Summer Olympic games since 1896. He is the single holder of the records for both most Olympic golds and Olympic medals for a cyclist.
Shane Perkins is an Australian and Russian professional track cyclist.
Antonio Miguel Parra is a retired Spanish professional track cyclist. He claimed the men's madison title at the 2004 Spanish Track Cycling Championships in Palma de Mallorca, and later represented his nation Spain at the 2008 Summer Olympics. During his sporting career, Parra also raced for the Catalunya–Angel Mir and Massi pro cycling teams.
Jeremy Adam Duvendeck is a retired American professional track cyclist. He represented the United States in two editions of the Olympic Games, and later claimed two elite national titles each in men's sprint (2003) and Keirin (2006) at the U.S. Track Cycling Championships. Before retiring to focus on his coaching career in 2009, Duvendeck rode for the Momentum Cycling Team.
Asier Martínez Echarte is a Spanish athlete who specializes in the 110m hurdles.
