The G10 currencies are the U.S. dollar, the euro, the British pound, the Japanese yen, the Swedish krona, the Norwegian krone, the Australian dollar, the New Zealand dollar, the Swiss franc and the Canadian dollar. The G10 currencies are 10 of the most heavily traded currencies in the world.
The G10 currencies are also the world's most liquid currencies. Traders buy and sell them in an open market regularly with minimal impact on their own international exchange rates.
The governors of the G10 countries hold meetings every other month at the Bank for International Settlements. The meetings are political and are often met with both protests and international press.