Notes

Obsolete nations notes

ANZ → AUS , NZL Australasia (ANZ) was a combined team of athletes from Australia (AUS) and New Zealand (NZL). They competed together during the 1908 and 1912 Games. BOH → TCH → CZE , SVK Prior to the foundation of Czechoslovakia (TCH) after World War I, athletes from Bohemia (BOH) (now part of the present-day Czech Republic) competed in 1900, 1908, and 1912 Games. Czechoslovakia competed in 1920–1992, from 1994 represented by successor NOCs of Czech Republic (CZE) and Slovakia (SVK). BWI → BAR , JAM , TRI Athletes from Barbados (BAR), Jamaica (JAM), and Trinidad and Tobago (TRI) competed as the British West Indies (BWI) at the 1960 Games. The West Indies Federation only existed as a nation from 1958–1962, so the constituent nations once again competed independently in 1964. SAA , EUA , GDR , FRG → GER Germany (GER) competed 1896–1952 and from 1992. Due to the partition of Germany after World War II, Germany was represented by two teams at the 1952 Games — Germany (GER) and the Saar (SAA). The Saar was reintegrated back into the Federal Republic of Germany on 1 January 1957, and Saar athletes then competed for Germany. East Germany did not contribute athletes to the 1952 team, as the National Olympic Committee for the German Democratic Republic was only granted "provisional" recognition by the IOC in 1955. For the Games of 1956–1964, Germany participated as a Unified Team of Germany (EUA), representing the National Olympic Committees of both West Germany and East Germany. Retrospectively, the IOC uses the country code EUA for this team. After the NOC for the German Democratic Republic was granted full recognition by the IOC in 1968, East Germany (GDR) and West Germany (FRG) competed as two independent teams from the 1968 to the 1988 Games. MAL , NBO → MAS Athletes from Malaya (MAL) and North Borneo (NBO) competed as independent teams at the 1956 Games and Malaya also competed at the 1960 Games, prior to the formation of the Federation of Malaysia (MAS) in 1963. AHO The Netherlands Antilles (AHO), an autonomous country within the Netherlands (NED), competed 1952–2008. The Netherlands Antilles Olympic Committee's membership in the IOC was withdrawn in 2011 because of the dissolution of the Netherlands Antilles. RU1 → URS → EUN → RUS The Russian Empire (RU1) participated at the 1900, 1908 and 1912 Games prior to World War I. Soviet Union (URS) competed 1952–1988. Unified Team (EUN) was the name used for team of several Commonwealth of Independent States nations that competed together at the 1992 Games after the breakup of the Soviet Union. After the dissolution of the Soviet Union, the Russian Federation (RUS) and other post-Soviet republics has participated since 1994.

SRB , YUG → IOP , SCG Serbia (SRB, 1912, 2006-current) first participated at the Olympic Games in 1912. Yugoslavia (YUG, 1920-1992 Winter) competed as Kingdom of Yugoslavia (officially the Kingdom of Serbs, Croats and Slovenes until 1929) in five Games (1920–1936) before the Second World War. They later competed as Socialist Federal Republic of Yugoslavia for the Games (1948–1992 Winter). This ended with the Breakup of Yugoslavia. Some ex-Yugoslavian nations (Croatia, Slovenia, Bosnia and Herzegovina) have competed as independent teams since 1992. Individual athletes from the Federal Republic of Yugoslavia (Serbia and Montenegro) competed as Independent Olympic Participants (IOP) at the 1992 Summer Games because of sanctions placed by the United Nations. Athletes representing Macedonia likewise competed as independent olympic participants because their NOC had not yet been formed. Since 1996 Macedonia has competed as independent team. The combined team Serbia and Montenegro (SCG, 1996-2006) consisted of the Republic of Serbia and the Republic of Montenegro. They competed as Federal Republic of Yugoslavia from (1996–2002) and then changed to State Union of Serbia and Montenegro (2004–2006). After 96 years Serbia returned to the Olympics as an independent team at the 2008 Games. Montenegro first participated as an independent team in 2008. YAR , YMD → YEM Prior to Yemeni unification in 1990, North Yemen participated as the Yemen Arab Republic (YAR) in 1984 and 1988, and South Yemen participated as the Yemen Democratic Republic (YMD) at the 1988 Games. After forming united republic Yemen (YEM) has participated since 1992. ROC → CHN , TPE The Republic of China was designated as China at the 1932, 1936, and 1948 Games and was representing all of China (including Taiwan). After the Chinese Civil War the People's Republic of China (CHN) and Chinese Taipei (TPE) have participated as separate teams. ZZX Special code used by the IOC to refer to medals won by athletes of multiple nations competing together, which was common in early Games (1896–1904). These medals are not included in the respective totals for each nation represented by individual mixed team athletes. IOA Special code used by the IOC for athletes whose NOC is not recognized by IOC. At the 2000 Summer Olympics four athletes from East Timor competed as Individual Olympic Athletes (IOA). At the 2012 Summer Olympics three athletes from former Netherlands Antilles and one athlete from South Sudan competed as Independent Olympic Athletes (IOA). At the 2016 Summer Olympics nine athletes from Kuwait competed as Independent Olympic Athletes (IOA). Kuwait Olympic Committee had been suspended by the International Olympic Committee (IOC) for the second time in five years due to governmental interference.