Can you keep your Iceland citizenship when you become a U.S. citizen?
Allowed
Yes, in general
Icelandic citizens who become U.S. citizens keep their Icelandic citizenship.
What the law says
- Restrictions on holding multiple nationalities were lifted in 2003.
- Icelandic citizens no longer lose their citizenship when acquiring foreign nationalities.
- Citizenship may still be involuntarily removed from citizens born abroad who never resided in Iceland before age 22, unless they apply to retain it before age 22.
“Icelandic citizens no longer lose their citizenship when acquiring foreign nationalities”
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 Iceland lets you keep yours.
Source: Icelandic nationality law (Wikipedia, summarized on 2026-11-11). Laws change — confirm with the Iceland embassy or consulate before your oath ceremony. This is not legal advice.
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