G-5
From ACT Wiki
1.
Loosely, the G-5 is a group of 5 major industrialised countries comprising France, Germany, Japan, the United Kingdom and the United States.
2.
More strictly, a meeting of the heads of government or the heads of central banks from those countries.
Also known as the Group of Five or 'G5'.
3.
The G5 (without a hyphen) is also a group of 5 developing countries comprising Brazil, China, India, Mexico and South Africa.