Can you keep your Paraguay citizenship when you become a U.S. citizen?
Allowed with conditions
Only in some cases
Citizens of Paraguay who become U.S. citizens generally do not keep their Paraguayan citizenship unless Paraguay has a reciprocity agreement with the United States, and naturalized Paraguayans lose it by naturalizing abroad.
What the law says
- Dual nationality is permitted only on a reciprocity basis; without a bilateral agreement, the other nationality is not permitted.
- As of 2022, only Spain and Italy have reciprocity agreements on dual nationality with Paraguay.
- There is a distinction between nationals born in Paraguay and naturalized nationals for loss of nationality.
- For naturalized Paraguayans, naturalizing in another country results in loss of nationality under Article 150 of the Constitution.
- Loss proceedings must be instituted by an individual or an agency, such as the Migration department.
“Dual nationality is permitted under the constitution of Paraguay on a reciprocity basis”
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 Paraguay lets you keep yours.
Source: Paraguayan nationality law (Wikipedia, summarized on 2026-11-11). Laws change — confirm with the Paraguay embassy or consulate before your oath ceremony. This is not legal advice.
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