Can you keep your Slovenia citizenship when you become a U.S. citizen?
Allowed
Yes, in general
Slovenian citizens who become U.S. citizens generally keep their Slovenian citizenship, since dual citizenship is permitted in Slovenia.
What the law says
- Dual citizenship is permitted in Slovenia, with the exception that those acquiring Slovenian citizenship by naturalisation are normally required to renounce any foreign citizenship they hold.
- The renunciation requirement applies to persons becoming Slovenian by naturalisation, not to existing Slovenian citizens acquiring another nationality.
- Slovenian citizens who possess another nationality may normally renounce Slovenian citizenship if resident outside Slovenia.
- Slovenians by birth who hold a multiple nationality may be subject to circumstances where they can be legally deprived of their citizenship in certain circumstances.
“Dual citizenship is permitted in Slovenia”
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 Slovenia lets you keep yours.
Source: Slovenian nationality law (Wikipedia, summarized on 2026-11-11). Laws change — confirm with the Slovenia embassy or consulate before your oath ceremony. This is not legal advice.
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