Austria competed at the 2000 Summer Olympics in Sydney, Australia. 92 competitors, 55 men and 37 women, took part in 68 events in 17 sports.
Venezuela competed at the 2000 Summer Olympics in Sydney, Australia. 50 competitors, 36 men and 14 women, took part in 49 events in 17 sports.
Belarus competed at the 2000 Summer Olympics in Sydney, Australia. 139 competitors, 72 men and 67 women, took part in 109 events in 20 sports. Belarus had its best ever showing both in terms of gold and overall medals at these games. The gold medal result will be later matched in 2008.
El Salvador competed at the 2000 Summer Olympics in Sydney, Australia, from 15 September to 1 October 2000. This was the nation's seventh appearance at the Olympics.
Bermuda competed at the 2000 Summer Olympics in Sydney, Australia.
Estonia competed at the 2000 Summer Olympics in Sydney, Australia. 33 competitors, 31 men and 2 women, took part in 29 events in 11 sports.
Hong Kong competed at the 2000 Summer Olympics in Sydney, Australia under the name "Hong Kong, China" for the first time, as these were the first Games after the territory's handover from the United Kingdom to China in 1997. 31 athletes competed across 9 sports; Chiang Wai Hung, Ho Kwan Lung, Tang Hon Sing, William To Wai Lok and Maggie Chan Man Yee in athletics, Tam Kai Chuen, Ng Wei, Koon Wai Chee Louisa and Ling Wanting in badminton, Yueng Alexandra Ka-Wah and Wong Kam Po in cycling, Yu Yuet in diving, Lo Sing Yan, Lui Kam Chi and Fenella Ng in rowing, Chi Ho Ho and Lee Lai Shan in sailing, Li Hao Jian in shooting, Mark Kin Ming Kwok, Matthew Hon Ming Kwok, Tam Chi Kin, Lik Sun Fong, Wing Harbeth Fu, Hiu Wai Sherry Tsai, Yan Kay Flora Kong, Chan Wing Suet and Caroline Sin Wing Chiu in swimming, and Cheung Yuk, Leung Chu Yan, Song Ah Sim and Wong Ching in table tennis. No Hong Kong athlete won a medal in any event.
Israel competed at the 2000 Summer Olympics in Sydney, Australia. 39 competitors, 29 men and 10 women, took part in 43 events in 9 sports. The delegation of 39 athletes was the biggest at the time, and third-biggest in history, after 2008 with 40 and 2016 with 47.
Latvia competed at the 2000 Summer Olympics in Sydney, Australia. Latvia won their first summer Olympic gold medal at these games. 45 competitors, 30 men and 15 women, took part in 47 events in 13 sports.
Puerto Rico competed at the 2000 Summer Olympics in Sydney, Australia. 29 competitors, 23 men and 6 women, took part in 31 events in 10 sports.
Armenia competed at the 2000 Summer Olympics in Sydney, Australia.
Azerbaijan competed at the 2000 Summer Olympics in Sydney, Australia. They won their first gold medal during these games. 31 competitors, 25 men and 6 women, took part in 14 events in 8 sports.
Algeria competed at the 2000 Summer Olympics in Sydney, Australia. 47 competitors, 37 men and 10 women, took part in 42 events across 10 sports.
Eritrea competed in the Olympic Games for the first time at the 2000 Summer Olympics in Sydney, Australia.
Four athletes from East Timor, at the time under United Nations administration, competed as individual Olympic athletes at the 2000 Summer Olympics in Sydney, Australia.
Mark Jacobus Louis Neeleman is a sailor from the Netherlands. Since the Netherlands did boycott the Moscow Olympic Games Neeleman represented his National Olympic Committee at the 1980 Summer Olympics in Tallinn, USSR under the Dutch NOC flag. Neeleman took 8th place in the 1980 Summer Olympics, which was boycotted by several countries. In 1984 Summer Olympics, Los Angeles Neeleman did a second attempt in the Finn and finished on the 9th place. Neeleman missed the selection for the 1988 Olympics, Pusan.
Roy Heiner is a sailor from the Netherlands, who represented his country at the 1988 Summer Olympics in Pusan. Heiner took 7th place in the Finn. In 1992 Summer Olympics, Barcelona Heiner helmed the Dutch Soling. With crew members Peter Burggraaff and Han Bergsma Heiner took 18th place. Heiner switched back to the Finn for the 1996 Summer Olympics, Savannah and took the bronze medal. His last Olympic appearance was in the 2000 Sydney Olympics. With crew members Peter van Niekerk and Dirk de Ridder Heiner took 4th place in the Soling.
Johannes Leo Jozef "Jos" Schrier is a sailor from the Netherlands, who represented his country at the 1992 Summer Olympics in Barcelona. With Mark Neeleman as helmsman, Schrier took the 4th place in the Star. In the 2000 Sydney Olympics, Schrier made his second Olympic appearance and performed with the Dutch Star Mark Neeleman. Together, they took 6th place in the Star.
Dirk de Ridder is a sailor born in Oudewater, Netherlands, who represented his country at the 2000 Summer Olympics in Sydney. With Roy Heiner as helmsman and Peter van Niekerk as fellow crew member, De Ridder took the 4th place in the Soling.
Jacob Dirk "Jaap" Zielhuis is a sailor from the Netherlands. Zielhuis represented his country at the 2004 Summer Olympics in Athens. Zielhuis took 19th place in the Finn. During the Sydney Olympics 2000 Zielhuis was coach of the Dutch Olympic Sailing Team.
