---
title: "Australia Blocs & Alliances | Model Diplomat"
description: "Every diplomatic bloc and alliance Australia belongs to — and the allies, rivals, and neighbors that shape its votes."
url: "https://modeldiplomat.com/country/australia/blocs-alliances"
---

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Updated Jun 10, 2026

# Which blocs and alliances does Australia belong to?

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

## Bloc memberships

[G20](https://modeldiplomat.com/country/bloc/g20)

[19](https://modeldiplomat.com/country/bloc/g20)

[Premier forum for international economic cooperation, \~85% of global GDP.](https://modeldiplomat.com/country/bloc/g20)

[+14](https://modeldiplomat.com/country/bloc/g20)

[OECD](https://modeldiplomat.com/country/bloc/oecd)

[38](https://modeldiplomat.com/country/bloc/oecd)

[Organisation for Economic Co-operation and Development — 38 high-income democracies.](https://modeldiplomat.com/country/bloc/oecd)

[+33](https://modeldiplomat.com/country/bloc/oecd)

## Allies, rivals & neighbours

Allies

[United States](https://modeldiplomat.com/country/usa)[United Kingdom](https://modeldiplomat.com/country/gbr)[New Zealand](https://modeldiplomat.com/country/nzl)[Japan](https://modeldiplomat.com/country/jpn)[India](https://modeldiplomat.com/country/ind)

## Organisation memberships

Memberships

Organizations

6

UNUNfounding-member · 1945

QQmember

AAmember · 2021

PIFPIFmember

G20G20member

FEFEmember

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[Treaties](https://modeldiplomat.com/country/australia/treaties)[Background](https://modeldiplomat.com/country/australia/background)[Politics & democracy](https://modeldiplomat.com/politics/australia)