Updated Jun 10, 2026
Which blocs and alliances does United States belong to?
Every diplomatic bloc and alliance United States belongs to — and the allies, rivals, and neighbors that shape its votes.
Bloc memberships
P5
5The five permanent members of the UN Security Council with veto power.
G7
7Industrialised democracies that coordinate global economic and security policy.
G20
19Premier forum for international economic cooperation, ~85% of global GDP.
NATO
32North Atlantic Treaty Organization — 32-member transatlantic defensive alliance.
OECD
38Organisation for Economic Co-operation and Development — 38 high-income democracies.
OAS
35Principal political forum of the Western Hemisphere — 35 member states.
Allies, rivals & neighbours
Organisation memberships
Memberships
Organizations
UNUNfounding-member · 1945
USCUSCpermanent-member
NATONATOfounding-member · 1949
G7G7member
G20G20member
OOfounding-member · 1961