
Just how far back in history organized athletic contests were held remains a matter of debate, but it is reasonably certain that they occurred in Greece almost 3,000 years ago. However ancient in origin, by the end of the 6th century BC at least four Greek sporting festivals, sometimes called "classical games," had achieved major importance: the Olympic Games, held at Olympia; the Pythian Games at Delphi; the Nemean Games at Nemea; and the Isthmian Games, held near Corinth. The Olympic Games were perhaps the greatest of these sporting events, and all Olympian victors were highly appreciated among the Greeks.

This is a list of all Dutch cyclists who competed at the Summer Olympics. As of 2012 events in four cycling disciplines have been competed at the Summer Olympics. Dutch cyclist did not compete at the 1896, 1900 Summer Olympics, 1904 Summer Olympics and 1912 Summer Olympics and boycotted the 1956 Summer Olympics.

A small fraction of the world's population ever competes at the Olympic Games; an even smaller fraction ever competes in multiple Games. 515 athletes have participated in at least five Olympics from Athens 1896 to Pyeongchang 2018, but excluding the 1906 Intercalated Games. Just over a hundred of these have gone on to make at least a sixth Olympic appearance.

This article includes lists of all Olympic medalists since 1896, organized by each Olympic sport or discipline, and also by Olympiad.

The following is a list of National Football League players that have participated in the Olympic Games, with the NFL team that they played for, the sport that they participated in, and their medal count. All represented the United States, except for Colin Ridgway who represented Australia in 1956 and Jahvid Best who represented Saint Lucia in 2016. American football has only been played once in 1932.

El Salvador first competed in the Olympic Games at the 1968 Summer Olympics in Mexico City, Mexico. No athletes were sent to the 1976 Summer Olympics, and the nation took part in the boycott of the 1980 Summer Olympics. Excluding these two Games, El Salvador has participated in every Summer Olympic Games since 1968. It has never competed in the Olympic Winter Games. As of the completion of the 2012 Summer Olympics, 118 Salvadorans have represented their nation at the Olympics. No Salvadoran has ever won an Olympic medal.

This list consists of sailors who have competed at the Summer Olympics.