Can you keep your Croatia citizenship when you become a U.S. citizen?
Allowed
Yes, in general
Croatian citizens who become U.S. citizens keep their Croatian citizenship, since Croatia does not require renunciation.
What the law says
- Croatia does not require its citizens to renounce Croatian citizenship when acquiring a new citizenship.
- The reverse rule differs: naturalisation into Croatian citizenship generally requires renunciation of the previous citizenship where the other country allows it.
- Exceptions to that renunciation requirement include descendants of Croatian emigrants, cases of national interest of Croatia, and former Croatians who renounced citizenship to practice a profession in another country.
- Croatian nationality law is mainly based on jus sanguinis and dates back to 26 June 1991, with amendments up to 15 December 2021.
“Croatia does not require its citizens to renounce Croatian citizenship when acquiring a new citizenship.”
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 Croatia lets you keep yours.
Source: Croatian nationality law (Wikipedia, summarized on 2026-11-11). Laws change — confirm with the Croatia embassy or consulate before your oath ceremony. This is not legal advice.
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