Switzerland competed at the 2000 Summer Olympics in Sydney, Australia. 102 competitors, 64 men and 38 women, took part in 82 events in 19 sports.
Brazil competed at the 2000 Summer Olympics in Sydney, Australia. Brazilian athletes won twelve medals: six silver and six bronze, in the first Summer Olympics edition without a gold medal since the 1976 Summer Olympics. The 205 competitors, 111 men and 94 women, took part in 96 events in 23 sports.
Spain competed at the 2000 Summer Olympics in Sydney, Australia. 321 competitors, 216 men and 105 women, took part in 165 events in 27 sports.
Canada competed at the 2000 Summer Olympics in Sydney, Australia, held from 15 September to 1 October 2000. 294 competitors, 150 men, and 144 women, took part in 175 events in 29 sports.
Colombia competed at the 2000 Summer Olympics in Sydney, Australia. Colombia won its first ever gold medal at these Olympic games. 44 competitors, 25 men and 19 women, took part in 45 events in 13 sports.
Spain competed at the 1996 Summer Olympics in Atlanta, United States. 289 competitors, 194 men and 95 women, took part in 157 events in 22 sports.
Turkey competed at the 2000 Summer Olympics in Sydney, Australia.
Portugal competed at the 2000 Summer Olympics in Sydney, Australia.
The Republic of China competed as Chinese Taipei at the 2000 Summer Olympics (中華臺北隊) in Sydney, Australia. The change in name was due to the political status of Taiwan. In addition, they flew a flag especially designed for the games separate from the flag of the Republic of China.
The Philippines competed at the 2000 Summer Olympics in Sydney, Australia. This is the first time the Philippines failed to garner at least one medal in the Olympics since 1988.
Ireland competed at the 2000 Summer Olympics in Sydney, Australia.
Sri Lanka competed at the 2000 Summer Olympics in Sydney, Australia. The nation won its first Olympic medal since 1948. Sri Lanka has sent their ever largest number of competitors (18) for an Olympic game in this event.
Thailand competed at the 2000 Summer Olympics in Sydney, Australia.
Vietnam competed at the 2000 Summer Olympics in Sydney, Australia. Vietnam was represented by seven athletes in four sports, and won their first Olympic medal.
Kyrgyzstan competed at the 2000 Summer Olympics in Sydney, Australia. Kyrgyzstan won their first Olympic medal at these games. 48 competitors, 35 men and 13 women, took part in 59 events in 9 sports.
Ecuador competed at the 2000 Summer Olympics in Sydney, Australia. Since it first participated in the 1924 Summer Olympics in Paris, this was the nation's ninth consecutive appearance at the Olympics.
Uzbekistan competed at the 2000 Summer Olympics in Sydney, Australia. 70 competitors, 52 men and 18 women, took part in 69 events in 12 sports.
Costa Rica competed at the 1996 Summer Olympics in Atlanta, United States. Claudia Poll won the nation's first ever gold medal. This was Costa Rica's second Olympic medal in 10 Olympic appearances. The only previous one, a silver medal, was won by Claudia's sister Silvia Poll at the 1988 Summer Olympics in Seoul, South Korea.
Saudi Arabia competed at the 2000 Summer Olympics in Sydney, Australia. The nation won its first Olympic medals at these Games.
Papua New Guinea competed at the 2000 Summer Olympics in Sydney, Australia.
