Loosely, the group of 20 economies whose membership is listed below.
More strictly, a meeting of the central bank governors and finance ministers from those economies.
The membership of the G20 is:
Argentina, Australia, Brazil, Canada, China, European Union, France, Germany, India, Indonesia, Italy, Japan, Mexico, Russia, Saudi Arabia, South Africa, South Korea, Turkey, United Kingdom and United States of America.
The G20 was established in 1999.
Also known as the Group of Twenty.