Brazil competed at the 2004 Summer Olympics in Athens, Greece, from 13 to 29 August 2004. This was the nation's nineteenth appearance at the Summer Olympics, excluding the 1928 Summer Olympics in Amsterdam. The Brazilian Olympic Committee sent the nation's largest ever delegation in history to the Games. A total of 243 athletes, 124 men and 119 women, competed in 24 sports.
The volleyball tournaments at the 2012 Olympic Games in London were played between 28 July and 12 August.
Brazil was the host nation of the 2016 Summer Olympics in Rio de Janeiro from 5 to 21 August 2016. This was the nation's twenty-second appearance at the Summer Olympics, having competed in all editions in the modern era from 1920 onwards, except the 1928 Summer Olympics in Amsterdam. Setting a milestone in Olympic history, Brazil became the first South American country to host the Summer Olympics, and the second Latin American host following the 1968 Summer Olympics in Mexico.
The association football tournament at the 2016 Summer Olympics was held from 3 to 20 August in Brazil.
South Korea, officially the Republic of Korea, competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's seventeenth appearance at the Olympics. The Korean Olympic Committee sent the nation's smallest ever delegation to the Games in Olympic history since 1984. A total of 205 athletes, 103 men and 101 women, competed in 24 sports.
The Netherlands competed at the 2016 Summer Olympics in Rio de Janeiro, from 5 to 21 August 2016. Since the nation's official debut in 1900, Dutch athletes had competed at every edition of the Summer Olympic Games in the modern era, with the exception of the sparsely attended 1904 Summer Olympics in St. Louis and 1956 Summer Olympics in Melbourne, which the Netherlands boycotted because of the Soviet invasion of Hungary.
The People's Republic of China competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's tenth appearance at the Summer Olympics since its debut in 1952.
The United States of America (USA), represented by the United States Olympic Committee (USOC), competed at the 2016 Summer Olympics in Rio de Janeiro, from August 5 to 21, 2016. U.S. athletes have appeared in every Summer Olympic Games of the modern era, with the exception of the 1980 Summer Olympics in Moscow, which they boycotted. For the second consecutive time in the Summer Olympics, the United States was represented by more female than male athletes (264 men and 291 women).
Italy competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. Italy has competed in every Summer Olympics, except the 1904 Summer Olympics in St. Louis.
Serbia competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. It was the nation's fourth appearance at the Summer Olympics as an independent country. The Olympic Committee of Serbia confirmed a roster of 103 athletes, 58 men and 45 women, to compete across 14 sports at the Games.
Spain, represented by the Spanish Olympic Committee (COE), competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. Since the nation's official debut in 1920, Spanish athletes have appeared in every edition of the Summer Olympic Games except for two; the 1936 Summer Olympics in Nazi Germany, and the 1956 Summer Olympics in Melbourne, as a protest against the Soviet invasion of Hungary. The Spanish Olympic Committee sent a total of 306 athletes, 163 men and 143 women, to compete in 25 sports.
Poland competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. Since the nation's official debut in 1924, Polish athletes have appeared in every edition of the Summer Olympic Games except the 1984 Summer Olympics in Los Angeles, because of the Soviet boycott.
Canada competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from August 5 to August 21, 2016. Since the nation's debut in 1900, Canadian athletes had appeared in every edition of the Summer Olympic Games, with the exception of the 1980 Summer Olympics in Moscow because of the country's support for the United States-led boycott. The chef de mission was Curt Harnett, appointed in April 2016 after Jean-Luc Brassard, the original chef de mission, resigned his position.
Argentina competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's twenty-fourth appearance at the Summer Olympic Games, having missed only three editions since their 1900 debut: the 1904 Summer Olympics in St. Louis, the 1912 Summer Olympics in Stockholm and the 1980 Summer Olympics in Moscow because of its support for the United States-led boycott. The Argentine Olympic Committee sent the nation's largest ever delegation to the Games in Olympic history, surpassing the record set in London 1948.
Mexico competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's twenty-third appearance at the Summer Olympics. The Mexican Olympic Committee sent the nation's largest delegation to the Games since 1972, with a total of 124 athletes, 80 men and 44 women, competing across 26 sports.
Japan competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. Since the nation's official debut in 1912, Japanese athletes had appeared at every Summer Olympic Games in the modern era, except for two editions; they were not invited to the 1948 Summer Olympics in London because of the nation's role in World War II, and were also part of the United States-led boycott, when Moscow hosted the 1980 Summer Olympics.
Egypt competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. Since the nation's debut in 1912, Egyptian athletes had appeared in every edition of the Summer Olympic Games except 1932 and 1980, joining the United States-led boycott in the latter.
The men's tournament in volleyball at the 2016 Summer Olympics was the 14th edition of the event at the Summer Olympics, organised by the world's governing body, the FIVB, in conjunction with the IOC. It was held in Rio de Janeiro, Brazil from 7 to 21 August 2016.
Puerto Rico competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's eighteenth consecutive appearance at the Summer Olympics.
Cameroon competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. It was the nation's fourteenth consecutive appearance at the Summer Olympics.
