If you hope to be recognized as French by descent, the document you are working toward has a name: the certificat de nationalité française, or CNF. It is often described as a French citizenship certificate, but that translation hides an important point. The CNF does not give you nationality. It proves a nationality you already hold in law. This guide explains what it is, where to request it, and what to expect.
What the CNF is
The CNF is an official document issued by a French court that states a person is French and cites the legal basis for that status, such as descent from a French parent. It is generally described as the only document that formally proves French nationality. Identity cards and passports, by contrast, are travel and identity documents, and they are issued on the basis of proof of nationality.
What the CNF proves and what it does not
- It proves that you are French and on what legal basis.
- It does not create nationality. If your chain is broken, the court will not issue it.
- It is not a passport. You use the CNF to obtain a French identity card and passport.
- It is not an application for a new status. For people with a French parent, nationality arises by law, and the CNF recognizes it.
Where to file
| Your situation | Where the request goes |
|---|---|
| Born in France | The competent court (tribunal judiciaire or local court) for your place of birth or residence; check which applies |
| Born abroad and living abroad | The nationality department (pôle de la nationalité française) of the Paris judicial court |
| Living in France | The court competent for your place of residence; check which applies |
Court addresses and procedures change. Confirm the current office, the way to submit your request (by post or in person), and the document list on service-public.gouv.fr or with the court before sending anything.
What it costs
The request and the issue of the certificate are free. The costs lie in the supporting documents: certified copies of civil-status records, certified translations, apostilles or legalizations where required, postage, and any professional help you choose to hire.
What you must prove
The court wants proof of two things: that your parent was French at your birth, and that nationality was not lost. For a descendant, that usually means the full chain of civil-status acts from you back to the French ancestor, plus proof of that ancestor’s French nationality, such as a birth act in France to French parents, a naturalization decree, or an earlier CNF. See our guide to the documents you will need.
One detail is easy to miss: official guidance stresses that the birth act you provide for the person concerned should be recent, because an old copy cannot show later changes in nationality, such as a declaration or a decision that the person was not French. Request a fresh full copy rather than relying on an old one.
How long it takes
Processing times vary and can be long. Reports on the Paris nationality department have mentioned waits of up to 18 months, though times change with workload and staffing. Treat any figure, including this one, as a rough guide, and ask the court or check official sources for the current situation. If the court needs more documents, it will write to you, and the clock effectively pauses until you reply.
After you receive the CNF
- Check the certificate for errors in names, dates, and places, and report any promptly.
- Keep the original safe. A lost certificate generally means a new application.
- Apply for a French identity card and passport through the consulate or authorities, using the CNF as proof.
- Register your civil status as needed, for example by asking for transcription of your own birth act through the French civil-status service for people born abroad.
If the CNF is refused
A refusal is not necessarily the end. It will state reasons, and you may have the option of an appeal to the Ministry of Justice or a court action, within time limits that are strict. Because the rules are technical, a lawyer experienced in nationality law is strongly advisable at this stage. Our guide to the 50-year rule covers the most common legal ground for refusal.
Common questions about the CNF
- Do I need to live in France? No. People living abroad can request a CNF.
- Do I need to speak French? Nationality by descent does not depend on language, though the documents will be in French.
- Do I need a lawyer? Not legally for the request itself, but complex cases benefit from one.
- Can I pay someone to get it faster? No. Be wary of intermediaries who promise to speed up a free procedure.
For the overall picture, return to our complete guide to French citizenship by descent or the citizenship guide.
What happens at the court
The court registry examines the file, may write to ask for further documents, and then either issues the certificate or refuses. The certificate is delivered by the court’s registry, and the request form published by the courts also covers requests made for a minor child. Courts publish forms and procedures, so check the Paris court’s current instructions before you send anything.
When you might be asked for a CNF
Some French citizens born abroad, especially dual nationals, are asked to produce a CNF when they renew an identity document, because the authorities need formal proof of nationality. If you already hold French identity documents, you may still need a CNF if you ever have to renew them and your file lacks proof.
A timeline to plan around
| Stage | What happens | Typical effort |
|---|---|---|
| 1 | Identify the chain and collect civil-status acts | Weeks to months |
| 2 | Translate and legalize foreign documents | Weeks |
| 3 | Submit the request to the court | Days |
| 4 | Court examines the file and may request more documents | Months; Paris has reported waits up to 18 months |
| 5 | Certificate issued or refusal notified | Varies |
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