Can you keep your Kazakhstan citizenship when you become a U.S. citizen?
Not allowed
No, in general
Kazakhstani citizens who become U.S. citizens do not keep their original citizenship, since dual citizenship is prohibited.
What the law says
- Dual citizenship is prohibited under Kazakhstani nationality law.
- Dual citizenship is grounds for refusal of nationality.
- Naturalisation in Kazakhstan requires five years of residence, reduced to three years if married to a Kazakh citizen.
“Dual citizenship is prohibited under the Kazakhstani nationality law”
What about the U.S. side?
The United States allows dual citizenship. At the oath ceremony you promise to renounce allegiance to other countries, but U.S. law does not make you formally give up your other passport. The question is only whether Kazakhstan lets you keep yours.
Source: Kazakhstani nationality law (Wikipedia, summarized on 2026-11-11). Laws change — confirm with the Kazakhstan embassy or consulate before your oath ceremony. This is not legal advice.
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