Volleyball has been part of the Summer Olympics since 1964. At the first Olympic Games, nine sports were contested.[36] Since then, the number of sports contested at the Summer Olympic Games has gradually risen to thirty-six on the program for 2028[35]. At the 2012 Summer Olympics, however, the number of sports fell back to twenty-six following an IOC decision in 2005 to remove baseball and softball from the Olympic program. These sports retain their status as Olympic sports with the possibility of a return to the Olympic program in future games.[25] At the 121st IOC Session in Copenhagen on 9 October 2009, the IOC voted to reinstate both golf and rugby to the Olympic program, meaning that the number of sports to be contested in 2016 was once again 28.[37]
In order for a sport or discipline to be considered for inclusion in the list of Summer Olympic sports, it must be widely practiced in at least 75 countries, spread over four continents.
The following sports (or disciplines of a sport) make up the current and discontinued Summer Olympic Games official program and are listed alphabetically according to the name used by the IOC. The discontinued sports were previously part of the Summer Olympic Games program as official sports, but are no longer on the current program. The figures in each cell indicate the number of events for each sport contested at the respective Games; a bullet (•) denotes that the sport was contested as a demonstration sport.
Eight of the 32 sports at the 2024 Summer Olympics consist of multiple disciplines. Each discipline is marked with a unique 3-character identifier code by the IOC.[38][39] Disciplines from the same sport are grouped under the same color:
Aquatics – Basketball – Canoeing – Cycling – Gymnastics – Volleyball – Equestrian – Wrestling – Baseball and Softball
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