Can you keep your Norway citizenship when you become a U.S. citizen?
Allowed
Yes, in general
A Norwegian citizen who becomes a U.S. citizen keeps their Norwegian citizenship.
What the law says
- With effect from 1 January 2020, Norway allows dual citizenship.
- A Norwegian citizen acquiring a foreign citizenship does not lose Norwegian citizenship.
- Before 1 January 2020, anyone who acquired Norwegian nationality had to renounce previous citizenships; this is no longer required.
- Former Norwegian citizens who lost citizenship before that date upon naturalisation elsewhere may re-acquire it by declaration.
“A Norwegian citizen acquiring a foreign citizenship does not lose Norwegian 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 Norway lets you keep yours.
Source: Norwegian nationality law (Wikipedia, summarized on 2026-11-11). Laws change — confirm with the Norway embassy or consulate before your oath ceremony. This is not legal advice.
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