Which Countries Allow Dual Citizenship? Updated List of dual citizenship rules by country for 2025

Many people today want to become citizens of two countries. This is called dual citizenship. It allows more freedom to travel, live, work, or invest in different parts of the world. But not all countries allow it.

This blog shares an easy-to-understand guide for the dual citizenship rules by country in 2025. In this blog, you’ll learn which countries allow dual citizenship and which don’t in 2025. This will help if you’re thinking about getting a second passport by investment, birth, or other ways. 

What is Dual Citizenship?

Dual citizenship means you are a legal citizen of two countries at the same time. You can have two passports and enjoy rights in both countries, like buying property, working, and voting (in some cases). You can get dual nationality by:

• 🔹Birth (if your parents are from different countries)
• 🔹Marriage
• 🔹Living in a country for a long time (naturalization)
• 🔹Citizenship by investment

Countries That Allow Dual Citizenship (2025)

These countries allow you to keep your original citizenship while becoming a citizen of another country:

• 🔹Canada – You can have two or more citizenships.
• 🔹USA – Dual citizenship is allowed.
• 🔹UK (United Kingdom) – You can hold more than one passport.
• 🔹Portugal – Allows dual citizenship, often through EU residency programs.
• 🔹Ireland – Dual citizenship is allowed, and many people get it through Irish family history.
• 🔹Turkey – You can become a citizen by investing in real estate and keeping your first nationality.
• 🔹Malta – Offers citizenship by investment and allows you to keep your old citizenship.

Caribbean nations that allow dual citizenship and offer second passports:

• 🔹St. Kitts & Nevis
• 🔹Dominica
• 🔹Antigua & Barbuda
• 🔹St. Lucia
• 🔹Grenada

Countries That Do Not Allow Dual Citizenship

Some countries don’t permit you to have two nationalities. If you become a citizen of another country, you must give up your old one. These include:

• 👉 India – Dual citizenship is not allowed. You can get an OCI card instead.
• 👉 China – No dual nationality allowed.
• 👉 Singapore – You must choose one citizenship by age 21.
• 👉 Japan – You have to pick one by age 22.
• 👉 Malaysia – Dual citizenship is not allowed.
• 👉 Saudi Arabia – Very limited cases where dual citizenship is allowed.

Things to Think About Before Getting Dual Citizenship

Before applying for a second passport, ask yourself:

• 🔹Will I lose my current citizenship?
• 🔹Will I need to pay tax in both countries?
• 🔹Do I need to serve in the military?
• 🔹Can I travel easily with both passports?
• 🔹Are there any legal or voting issues?

What is Citizenship by Investment?

Some countries offer citizenship if you invest in them. This could mean:

• 🔹Buying real estate (a house or apartment)
• 🔹Donating to a government fund
• 🔹Starting a business

Popular countries that offer citizenship by investment are:

• 👉 St. Lucia
• 👉 St. Kitts & Nevis
• 👉 Antigua & Barbuda
• 👉 Dominica
• 👉 Grenada
• 👉 Turkey
• 👉 Malta

Many people use these programs to get a second passport quickly and legally.

Final Thoughts

Getting dual citizenship can give you more freedom, security, and opportunities. But not every country allows it. Always check the rules in both countries before you apply. The list of dual citizenship rules by country in 2025 can help you plan the best path for your future.