The 2012 Summer Olympics (officially the Games of the XXX Olympiad and also known as London 2012) were an international multi-sport event held from 27 July to 12 August 2012 in London, England, United Kingdom. The first event, the group stage in women's football, began on 25 July at the Millennium Stadium in Cardiff, followed by the opening ceremony on 27 July. 10,768 athletes from 204 National Olympic Committees (NOCs) participated in the 2012 Olympics.

London became the first city to host the modern Olympics three times, having previously hosted the Summer Games in 1908 and 1948.  

The United States topped the medal table, winning the most gold medals (46) and the highest number of medals overall (104). China finished second with a total of 91 medals (38 gold) and Great Britain came third with 65 medals overall (29 gold).