AIIB Member Countries 2026

Regional AIIB Member Countries

Regional members form the core of the Asian Infrastructure Investment Bank (AIIB). These countries are located primarily across Asia, the Middle East, Oceania, and the Pacific, and include major economies like China, India, Russia, Indonesia, Pakistan, Bangladesh, South Korea, and Saudi Arabia.

China is the AIIB’s largest shareholder by a wide margin, holding roughly $29.78 billion in subscriptions and more than 26% of total voting power in 2025. India ranks second, followed by Russia, South Korea, Australia, and Indonesia. Smaller regional members such as Maldives, Samoa, Tonga, and Nauru hold far less voting power but still participate in the institution’s governance structure.

Non-Regional AIIB Member Countries

Non-regional AIIB members are located outside the bank’s core Asian region and are concentrated heavily in Europe, along with parts of Africa and the Americas. Major non-regional members include Germany, France, the United Kingdom, Italy, Spain, Canada, and the Netherlands.

Germany is the largest non-regional shareholder, with about $4.48 billion in subscriptions and more than 4% of total voting power in 2025. France, the United Kingdom, and Italy also hold substantial influence within the bank. In recent years, additional countries from Africa and Latin America — including South Africa, Kenya, Morocco, Argentina, and Uruguay — have joined as non-regional members.

Prospective AIIB Member Countries

Prospective AIIB members are countries that have been approved or are in the process of completing membership requirements but are not yet fully active members. As of 2025, prospective members include Nigeria, Tanzania, Venezuela, Senegal, Bolivia, Lebanon, and Armenia.

Most prospective members are expected to join either as regional or non-regional participants depending on their geographic classification. Expanding membership reflects the AIIB’s growing international reach beyond its original Asia-focused foundation.

Voting Power and Subscriptions in the AIIB

Voting power within the AIIB is closely tied to member subscriptions, meaning countries that contribute more capital generally hold greater influence over decisions. China alone controls more than a quarter of total voting power, while India, Russia, South Korea, Australia, and Germany also rank among the institution’s most influential members.

Although many smaller countries hold only a fraction of the bank’s voting shares, membership still provides access to participation in governance, infrastructure financing discussions, and regional development initiatives. The distribution of voting power reflects both the AIIB’s Asian foundation and its increasingly global membership base.