Which Countries Do Not Allow Dual Nationality?

While many nations — including Cyprus, the U.S., Canada, and most of Europe — allow dual citizenship, several countries around the world strictly prohibit it. In these countries, becoming a citizen often requires renouncing your previous nationality.

Countries That Do NOT Allow Dual Citizenship

1. China

China prohibits dual citizenship in all circumstances.

2. India

India abolished dual citizenship; OCI is not full citizenship.

3. Singapore

Strictly bans dual citizenship for adults.

4. Japan

Requires citizens to choose one nationality by age 22.

5. Indonesia

Allows dual citizenship only for minors.

6. Malaysia

Dual nationality is prohibited.

7. Saudi Arabia

Generally does not allow dual citizenship except under rare exceptions.

8. Qatar

Prohibits dual nationality for most applicants.

9. UAE

Allows limited exceptions, but dual citizenship is tightly restricted.

Why Some Countries Ban Dual Citizenship

• National security concerns

• Cultural identity protection

• Strict tax systems

• Military service obligations

• Centralized state control

Countries That Do Allow Dual Citizenship

Most of Europe, the Americas, and Oceania allow it, including:

• Cyprus

• Greece

• Portugal

• Italy

• Canada

• Australia

• United States

• United Kingdom

These nations recognize global mobility and diaspora needs.

Bottom Line

Dual citizenship bans are mainly concentrated in Asia and the Gulf. Cyprus remains one of the world’s most flexible countries in this regard.

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