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The Commonwealth Games is a multinational, multi-sport event. Held every four years, it involves the elite athletes of the Commonwealth of Nations. Attendance at the Commonwealth Games is typically around 5,000 athletes. The Commonwealth Games Federation (CGF) is the organisation that is responsible for the direction and control of the Commonwealth Games.

The first such event, then known as the British Empire Games, was held in 1930 in Hamilton, Ontario, Canada. The name changed to British Empire and Commonwealth Games in 1954, to British Commonwealth Games in 1970 and assumed the current name of the Commonwealth Games in 1974.

As well as many Olympic sports, the Games also include some sports that are played mainly in Commonwealth countries, such as lawn bowls, rugby sevens and netball.

There are currently 53 members of the Commonwealth of Nations, and 71 teams participate in the Games. The four constituent countries of the United Kingdom—England, Scotland, Wales and Northern Ireland—send separate teams to the Commonwealth Games, and individual teams are also sent from the British Crown dependencies—Guernsey, Jersey and the Isle of Man—and many of the British overseas territories. The Australian external territory of Norfolk Island also sends its own team, as do the Cook Islands and Niue, two non-sovereign states in free association with New Zealand.

Only six teams have attended every Commonwealth Games: Australia, Canada, England, New Zealand, Scotland and Wales. Australia has been the highest scoring team for ten games, England for seven and Canada for one.