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The 2012 Summer Olympics, formally the Games of the XXX Olympiad and commonly known as London 2012, was a major international multi-sport event celebrated in the tradition of the Olympic Games, as governed by the International Olympic Committee . It took place in London and to a lesser extent across the United Kingdom from 25 July to 12 August 2012. The first event, the group stage in women's football began on 25 July at the Millennium Stadium in Cardiff, followed by the opening ceremonies on 27 July. 10,768 athletes from 204 National Olympic Committees participated.

Games of the XXX Olympiad
Four abstract shapes placed in a quadrant formation spelling out "2012". The word "London" is written in the shape representing the "2", while the Olympic rings are placed in the shape representing the "0".
Host city London, United Kingdom
Motto Inspire a Generation
Nations participating 204
Athletes participating 10,768
(5,992 men, 4,776 women)
Events 302 in 26 sports
Opening ceremony 27 July
Closing ceremony 12 August
Officially opened by
Athlete's Oath
Judge's Oath
Coach's Oath
Olympic Torch
  •  
Stadium Olympic Stadium
Summer:
Beijing 2008 Rio de Janeiro 2016  >
Winter:
Vancouver 2010 Sochi 2014  >

The 2012 Summer Olympics, formally the Games of the XXX Olympiad and commonly known as London 2012, was a major international multi-sport event celebrated in the tradition of the Olympic Games, as governed by the International Olympic Committee (IOC). It took place in London and to a lesser extent across the United Kingdom from 25 July to 12 August 2012. The first event, the group stage in women's football began on 25 July at the Millennium Stadium in Cardiff, followed by the opening ceremonies on 27 July. 10,768 athletes from 204 National Olympic Committees (NOCs) participated.

Following a bid headed by former Olympic champion Sebastian Coe and then-Mayor of London Ken Livingstone, London was selected as the host city on 6 July 2005 during the 117th IOC Session in Singapore, defeating bids from Moscow, New York City, Madrid, and Paris. London is the first and only city thus far to host the modern Olympic Games three times, having previously done so in 1908 and in 1948.

Construction for the Games involved considerable redevelopment, with an emphasis on sustainability. The main focus was a new 200-hectare (490-acre) Olympic Park, constructed on a former industrial site at Stratford, East London. The Games also made use of venues that already existed before the bid.

The Games received widespread acclaim for their organisation, with the volunteers, the British military and public enthusiasm praised particularly highly. The opening ceremony, directed by Danny Boyle, received widespread acclaim throughout the world, particular praise from the British public and a minority of widely ranging criticisms from some social media sites. During the Games, Michael Phelps became the most decorated Olympic athlete of all time, winning his 22nd medal. Saudi Arabia, Qatar, and Brunei entered female athletes for the first time, so that every currently eligible country has sent a female competitor to at least one Olympic Games. Women's boxing was included for the first time, thus the Games became the first at which every sport had female competitors. These were the final Olympic Games under the IOC presidency of Jacques Rogge.

The final medal tally was led by the United States, followed by China and host Great Britain. Several world and Olympic records were set at the games. Though there were several controversies, the 2012 games were deemed highly successful with the rising standards of competition amongst nations across the world, packed stadiums and smooth organisation. Furthermore, the focus on sporting legacy and post-games venue sustainability was seen as a blueprint for future Olympics.