The 2008 Summer Olympics (), officially the Games of the XXIX Olympiad () and also known as Beijing 2008 (), were an international multisport event held from 8 to 24 August 2008, in Beijing, China. A total of 10,942 athletes from 204 National Olympic Committees (NOCs) competed in 28 sports and 302 events, one event more than those scheduled for the 2004 Summer Olympics. This was the first time China had hosted the Olympic Games, and the third time the Summer Olympic Games had been held in East Asia, following the 1964 Olympics in Tokyo, Japan, and the 1988 Olympics in Seoul, South Korea. These were also the second Summer Olympic Games to be held in a communist state, the first being the 1980 Summer Olympics in the Soviet Union (with venues in Russia, Ukraine, Byelorussia, and Estonia).
Beijing was awarded the 2008 Games over four competitors on 13 July 2001, having won a majority of votes from members of the International Olympic Committee (IOC) after two rounds of voting. The Government of the People's Republic of China promoted the 2008 Games and invested heavily in new facilities and transport systems. 37 venues were used to host the events, including twelve constructed specifically for the 2008 Games. The equestrian events were held in Hong Kong, making these the third Olympics for which the events were held under the jurisdiction of two different NOCs. The sailing events were contested in Qingdao, while the football events took place across several different cities.
The official logo for the 2008 Games, titled "Dancing Beijing" (舞动北京), created by Guo Chunning (郭春宁), featured the Chinese character for capital (, stylized into the shape of a human being) in reference to the host city. The 2008 Olympics were watched by 3.5 billion people worldwide, and featured the longest distance for an Olympic Torch relay. The 2008 Games also set numerous world and Olympic records, and were the most expensive Summer Olympics of all time, and the second most expensive overall, after the 2014 Winter Games in Sochi.