Can you keep your France citizenship when you become a U.S. citizen?
Allowed
Yes, in general
French citizens who become U.S. citizens keep their French citizenship, since multiple citizenship has been officially recognized since 1973.
What the law says
- Multiple citizenship was officially recognized for both men and women on 9 January 1973.
- Since then, possession of more than one nationality does not affect French nationality.
- Before 19 October 1945, multiple nationality was prohibited and acquiring another nationality meant automatic loss of French nationality (with limited exceptions).
- The excerpt does not describe any permission or declaration required for French citizens acquiring another citizenship today.
“since then, possession of more than one nationality does not affect French nationality”
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 France lets you keep yours.
Source: French nationality law (Wikipedia, summarized on 2026-11-11). Laws change — confirm with the France embassy or consulate before your oath ceremony. This is not legal advice.
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