Quad 4 members
Quad has 4 members; together, today’s Quad members had 24% of the world’s people and 35% of its GDP in 2025.
Source: Membership: the groupings’ own member listsMembers as of 10 Nov 2026
Source: World Bank Indicators2025
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Summary
The Quadrilateral Security Dialogue: a security partnership of four countries, begun in 2007 and revived in 2017.
Today’s Quad members account for 24% of the world’s people (2025), 35% of the world’s GDP (2025), 40% of the world’s military spending (2025) and 25% of the world’s CO2 emissions (2024). Together they mine 32% of the world’s lithium, 21% of the world’s rare earths and 3.2% of the world’s palladium (USGS, 2025, estimated). Of its members, 4 are also in the G20, 3 in the OECD, 3 in APEC and 2 in the G7.
Membership is as each grouping lists it. A grouping’s share of the world adds up its members’ figures, against the sum for every country with a figure.
Source: Membership: the groupings’ own member lists; World Bank; Global Carbon Budget; FAOSTAT; USGSMembers as of 10 Nov 2026
Members
| India | 1.46 bn | 75% | $3.96 tn | BRICS, G20, SCO |
|---|---|---|---|---|
| United States | 342 m | 17% | $30.77 tn | G7, G20, NATO, OECD, APEC, UN Security Council (permanent), AUKUS, USMCA |
| Japan | 123 m | 6.3% | $4.44 tn | G7, G20, OECD, APEC, RCEP |
| Australia | 28 m | 1.4% | $1.80 tn | G20, OECD, APEC, RCEP, AUKUS |
Source: Membership: the groupings’ own member lists; World BankMembers as of 10 Nov 20262025