Canada competed at the 2004 Summer Olympics in Athens, Greece, from 13 to 29 August 2004. Canadian athletes have competed in every Summer Olympic Games since 1900, except the 1980 Summer Olympics in Moscow because of the country's support for the US-led boycott.
Australia competed at the 2004 Summer Olympics in Athens, Greece from 13 to 29 August 2004. Australian athletes have competed in every Summer Olympic Games of the modern era. The Australian Olympic Committee sent a total of 470 athletes to the Games to compete in 29 sports.
Italy competed at the 2004 Summer Olympics in Athens, Greece, from the 13th to the 29th of August 2004. The country has competed at every Summer Olympic games in the modern era, except for the 1904 Summer Olympics in St. Louis. The Italian National Olympic Committee sent the nation's largest ever delegation in history to the Games. A total of 364 athletes, 229 men and 135 women, competed in 27 sports.
The United States competed at the 1976 Summer Olympics in Montreal, Quebec, Canada. 396 competitors, 278 men and 118 women, took part in 189 events in 19 sports.
The United States was the host nation of the 1984 Summer Olympics in Los Angeles, California. It was the nineteenth time that Team USA participated, having boycotted the 1980 Summer Olympics. 522 competitors, 339 men and 183 women, took part in 217 events in 25 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.
New Zealand competed at the 2000 Summer Olympics in Sydney, Australia. The New Zealand Olympic Committee was represented by 151 athletes and 100 officials at these Summer Olympics.
The United States of America (USA) competed at the 1988 Summer Olympics in Seoul, South Korea. 527 competitors, 332 men and 195 women, took part in 230 events in 27 sports. The United States finished outside of the top two in the overall medal count for the first time and in the gold medal count for only the second time. That was mainly caused by the extensive state-sponsored doping programs that were developed in these communist countries to fulfil their political agenda on an international stage.
The Unified Team at the 1992 Summer Olympics in Barcelona, Spain, was a joint team consisting of twelve of the fifteen former Soviet republics that chose to compete together. The previously Soviet-occupied states of Estonia, Latvia, and Lithuania competed separately. The team has been informally called the Commonwealth of Independent States team, though Georgia was not yet a member of the CIS when it competed as part of the Unified Team. It competed under the IOC country code EUN. A total of 475 competitors, 310 men and 165 women, took part in 234 events in 27 sports.
Spain was the host nation for the 1992 Summer Olympics in Barcelona. The Games were quite exceptional for Spain because their athletes were competing not only in their home country, but also in the home city of IOC President Juan Antonio Samaranch. 422 competitors, 297 men and 125 women, took part in 195 events in 29 sports.
The People's Republic of China competed at the 1992 Summer Olympics in Barcelona, Spain. 244 competitors, 117 men and 127 women, took part in 144 events in 23 sports.
The United States (USA) was the host nation for the 1996 Summer Olympics in Atlanta. 646 competitors, 375 men and 271 women, took part in 263 events in 31 sports.
South Korea competed as Korea at the 2000 Summer Olympics in Sydney, Australia. Athletes from North and South Korea marched together in the opening ceremony under the Korean Unification Flag. 281 competitors, 175 men and 106 women, took part in 144 events in 26 sports.
Nicaragua competed at the 1996 Summer Olympics in Atlanta, United States.
Cuba competed at the 1992 Summer Olympics in Barcelona, Spain. The nation returned to the Olympic Games after boycotting both the 1984 Games and the 1988 Games. 176 competitors, 126 men and 50 women, took part in 90 events in 16 sports.
Yugoslavia competed at the 1984 Summer Olympics in Los Angeles, United States which took place from 29 July to 12 August 1984. Yugoslav athletes had competed in every Summer Olympic Games since their official debut in 1920. The Yugoslav Olympic Committee (JOK) sent a delegation of 139 athletes, 105 men and 34 women, competing in 16 sports, down from 164 competitors in 1980. Due to the Soviet-led boycott, Yugoslavia was one of only three Communist countries to take part at the Games, along with China and Romania.
Brazil sent a delegation to compete at the 2008 Summer Olympics in Beijing, China, in August 2008. Brazilian athletes have competed in every Summer Olympic Games since 1920, except the 1928 Summer Olympics. The country is represented by the Brazilian Olympic Committee. Brazil headed to the Beijing Games with its largest Olympic delegation at the time, 277 athletes, including 132 women.
The United States of America (USA) competed at the 2004 Summer Olympics in Athens, Greece. 533 competitors, 279 men and 254 women, took part in 254 events in 31 sports.
The United States of America (USA) competed at the 2000 Summer Olympics in Sydney, Australia. 586 competitors, 333 men and 253 women, took part in 265 events in 31 sports.
The United States competed in the 2019 Pan American Games in Lima, Peru from July 26 to August 11, 2019. The team included 313 men and 327 women.
