Updated Jun 10, 2026

Which blocs and alliances does South Korea belong to?

Every diplomatic bloc and alliance South Korea belongs to — and the allies, rivals, and neighbors that shape its votes.

Bloc memberships

G20

Premier forum for international economic cooperation, ~85% of global GDP.

+14

OECD

Organisation for Economic Co-operation and Development — 38 high-income democracies.

+33

Allies, rivals & neighbours

Allies

Rivals

Organisation memberships

Memberships

Organizations

UNUNmember · 1991

G20G20member

OOmember · 1996

AAmember · 1989

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