Countries Offering Fast Citizenship in 2025 By Marriage, Investment, Birth, and Naturalization

In 2025, many top countries will offer Citizenship by Marriage, Investment, Birthright, and Naturalization process you can work, live, or study in another country legally. Every country has unique policies and timeframes for living, working, and studying.
The Countries Offering Citizenship by Marriage
- Brazil
- Provide Citizenship after 1 year of marriage if you live in Brazil.
- No residency is required if you have children with your spouse.
- Argentina
- Provide Citizenship after 2 years of marriage and residency in Argentina.
- And also allowed dual citizenship.
- Itlay
- Give Citizenship after 2 years of marriage and if living in Italy.
- Time will be halved if you have children.
- Mexico
- Citizenship will provided after 2 years of marriage.
- You have to live in Mexico during this process.
The Countries Offering Citizenship by Naturalization
- Argentina
- Provide citizenship after 2 years if you continuously live in Argentina.
- Dual Citizenship is also allowed.
- Paraguay
- Provide Citizenship after 3 years if you live in Paraguay.
- No language and culture test is required.
- Dominican Republic
- Citizenship after 2 years of legal residence.
- Fast citizenship for investors.
- Portugal
- Provide Citizenship after 5 years if you live in Portugal.
- No need to leave your original Citizenship.
The Countries Offering Citizenship by Investment
- St. Kitts and Nevis
- Provide citizenship in 60 days if you invest $125,000 in the Sustainable Growth Fund.
- You will not need residency for citizenship.
- Dominica
- Give citizenship in 3 to 4 months if you invest $100,000 in contribution or real estate investment.
- Turkey
- Provide citizenship in 3 to 6 months if you invest $400,000 in real estate investment.
- Malta
- They provide you citizenship in 1 to 3 years if you invest €750,000 or more.
The Countries Offering Citizenship by Birthright
- United States
- Automatically provide citizenship if you are born in the U.S.
- Regardless of parents’ nationality.
- Canada
- Provide Citizenship to every child born in Canada.
- Brazil
- Provide citizenship for every child born in Brazil, and parents can apply for residency.
- Argentina
- A child born in Argentina gets citizenship after 2 years when his parents apply for citizenship.