Can you keep your Slovakia citizenship when you become a U.S. citizen?
Not allowed
No, in general
Slovak citizens who voluntarily acquire U.S. citizenship automatically lose their Slovak citizenship.
What the law says
- A 2010 amendment enacted loss of Slovak citizenship upon naturalization elsewhere.
- Slovakia restricts its nationals from acquiring another citizenship; upon an act of will to acquire another, Slovak citizenship is automatically lost.
- Dual citizenship is permitted where the additional nationality was acquired at birth or through marriage, or held before becoming a Slovak citizen.
- The 2010 amendment did not bar dual citizenship for those who acquired it at birth or by marriage.
“upon manifesting an act of will to acquire another ... Slovak citizenship is automatically lost”
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 Slovakia lets you keep yours.
Source: Slovak nationality law (Wikipedia, summarized on 2026-11-11). Laws change — confirm with the Slovakia embassy or consulate before your oath ceremony. This is not legal advice.
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