Can you keep your Greece citizenship when you become a U.S. citizen?
Allowed
Yes, in general
A Greek citizen who becomes a U.S. citizen generally keeps their Greek citizenship.
What the law says
- Greek law permits dual citizenship.
- A Greek national does not usually lose Greek citizenship when obtaining another nationality unless they specifically request it.
- Exception: loss may occur in the rare case where a citizenship permit was granted by the Greek government and the citizen subsequently obtains another country's citizenship.
- A Greek citizen may voluntarily renounce citizenship by applying to the Ministry of Interior in Athens.
- For male Greek nationals, renunciation is subject to completion of military duties.
“A Greek national does not usually lose their Greek citizenship when they obtain another nationality unless they specifically request it”
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 Greece lets you keep yours.
Source: Greek nationality law (Wikipedia, summarized on 2026-11-11). Laws change — confirm with the Greece embassy or consulate before your oath ceremony. This is not legal advice.
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