A painfully familiar situation: you are applying for a residence permit as the parent of a French child, and the other parent — with whom relations are strained — refuses to give you the child's identity card. The good news is that the physical card is not the only way to prove your child's nationality, and the alternatives can be obtained without the other parent's involvement.
What the prefecture actually requires
Your file must include proof of the child's French nationality — not necessarily their national identity card (CNI). Three alternative forms of evidence will do the job, listed here from the simplest to the most conclusive.
Proof #1 — The full copy of the birth certificate
As a parent named on the birth certificate, you have the right to request a full copy of your child's birth certificate from the registry office (mairie) of the place of birth — in person, by post, or online, presenting your own identity document and evidence establishing parentage. If the child's nationality derives from a French parent, the birth certificate (which names both parents) combined with that parent's proof of nationality constitutes sufficient demonstration.
Proof #2 — The certificate of French nationality (CNF)
This is the gold-standard proof — the one that ends any debate at the counter. The CNF is requested from the registry of the judicial court (greffe du tribunal judiciaire) ; a parent exercising parental authority may apply for it on behalf of their minor child. Processing takes time (several weeks to several months depending on the court), but the document is authoritative everywhere and remains valid for a long time.
Proof #3 — Documents you may already have
The family record book (livret de famille), the deed of acknowledgement of parentage, even an older copy of the child's CNI or passport: include everything you have. A consistent body of evidence makes the assessment of your file easier.
The other pillar of your file: your role as a parent
Your child's nationality is only half of the file. The prefecture is primarily concerned with your active contribution to the child's upkeep and upbringing. Keep careful records of: bank transfers and purchases made for the child, supporting letters (from their school, activity providers, people close to the family), and proof of visits and your presence in the child's life. If the other parent is obstructing your rights more broadly, bringing the matter before the family court judge (juge aux affaires familiales) can establish an official framework (visitation rights, financial contribution) — which, in addition to protecting your relationship with your child, will objectively strengthen your prefecture file.
⚠️ General information, not legal advice: conflicted family situations deserve the support of a lawyer or an association — many consultations are free of charge (legal access points, bar associations).
Frequently asked questions
Can the registry office refuse to give me the birth certificate? Not if you are a parent named on the certificate and can prove your identity — it is your right.
Is the CNF mandatory? No, but it is the strongest form of proof if the prefecture proves demanding or if your file is atypical.
What if I do not hold parental authority? The process becomes more complicated — this is precisely the case where professional advice is essential before taking any steps.
Further reading: OQTF appeal rejected: what options remain?