South Korea competed at the 2004 Summer Olympics in Athens, from 13 to 29 August 2004. This was the nation's fourteenth appearance at the Olympics, except the 1980 Summer Olympics in Moscow because of its support for the United States boycott. The Korean Olympic Committee sent the nation's smallest delegation to the Games since 1992. A total of 264 athletes, 145 men and 119 women, competed in 25 sports.
Volleyball has been part of the Summer Olympics program for both men and women consistently since 1964.
The Japan national baseball team, also known as Samurai Japan (侍ジャパン), is the national team representing Japan in international baseball competitions. It won the World Baseball Classic in 2006, 2009, and 2023 as well as WBSC Premier12 in 2019. The team is currently ranked 1st in the world by the World Baseball Softball Confederation and is a baseball powerhouse.
The Pakistan national field hockey team represents Pakistan in international field hockey. Having played its first match in 1948, it is administered by the Pakistan Hockey Federation (PHF), the governing body for hockey in Pakistan. It has been a member of the International Hockey Federation (FIH) since 1948 and was founding member of the Asian Hockey Federation (ASHF), which was formed in 1958. Pakistan is one of the most successful national field hockey teams in the world with a record four Hockey World Cup wins.
The Busan Gudeok Stadium is a multi-purpose stadium in Busan, South Korea. The stadium is used mostly for football matches and can accommodate 12,349 spectators. The venue opened in September 1928 as Busan Municipal Stadium. During the 1988 Summer Olympics, it hosted some of the football matches. It was also the main venue for the 1997 East Asian Games, hosting the opening and closing ceremonies, as well as the athletics and football competitions. Football club Busan IPark played their home games at the venue between 1983 and 2002. Additionally, Busan Transport Corporation have played their home games at the venue since 2006.
The China national under-23 football team, also known as the China Olympic team (国奥队), represents the People's Republic of China in international football competitions in the Olympic Games, Asian Games, as well as any other under-23 international football tournaments. It is governed by the Chinese Football Association (CFA). It combines two teams: China U-23 national team and China U-21 selection team.
The association football tournament at the 2012 Summer Olympics was held from 25 July to 11 August, and was the only sport to begin before the official opening day of the Olympic Games, two days before the opening ceremony. It was also the only sport to be held at multiple venues outside London, with Manchester, Glasgow, Newcastle, Coventry and Cardiff all hosting matches. The finals were played at Wembley Stadium. Associations affiliated with FIFA were invited to send their senior women's and men's under-23 national teams to participate; men's teams were allowed to augment their squads with three players over the age of 23. Five hundred and four football players competed for two sets of gold medals.
The Brazil national under-23 football team represents Brazil in international football competitions during Olympic Games and Pan American Games. The selection is limited to players under the age of 23, except three overage players. The team is controlled by the Brazilian Football Confederation (CBF). Brazil U23 is one of the most successful teams in the Olympic football tournament, having won it twice and securing a record total of seven medals, including two golds, three silvers, and two bronzes.
Kim Chang-soo is a South Korean former footballer who currently plays as righy back.
Jaume Fort Mauri is a Spanish handball player who competed in the 1988 Summer Olympics, in the 1992 Summer Olympics, and in the 1996 Summer Olympics.
William Carvalho da Silva, more commonly known as William, is a Brazilian former volleyball player who competed in the 1976 Summer Olympics, in the 1980 Summer Olympics, in the 1984 Summer Olympics, and in the 1988 Summer Olympics.
Amauri Ribeiro, known as Amauri, is a Brazilian former volleyball player who competed in the 1980 Summer Olympics, the 1984 Summer Olympics, the 1988 Summer Olympics, and the 1992 Summer Olympics.
Choi Suk-jae is a male South Korean former handball player who competed in the 1988 Summer Olympics and in the 1992 Summer Olympics.
Koh Suk-Chang is a male South Korean former handball player who competed in the 1984 Summer Olympics and in the 1988 Summer Olympics.
Lee Sang-Hyo is a male South Korean former handball player who competed in the 1984 Summer Olympics and in the 1988 Summer Olympics.
Park Do-Hun is a male South Korean former handball player who competed in the 1988 Summer Olympics and in the 1992 Summer Olympics.
Park Young-Dae is a male South Korean former handball player who competed in the 1984 Summer Olympics and in the 1988 Summer Olympics.
Shim Jae-Hong is a male South Korean former handball player who competed in the 1988 Summer Olympics and in the 1992 Summer Olympics.
Paulo André Jukoski da Silva, known as Paulão, is a Brazilian former volleyball player who competed in the 1988 Summer Olympics, the 1992 Summer Olympics, and the 1996 Summer Olympics.
South Korea 
