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Pathway

French Citizenship for Siblings of Citizens

France Citizenship
Pathway overview

At a glance

France has a narrow citizenship declaration for some adults who were born and raised in France and whose sibling became French through France's birth-and-childhood-residence rules. It is not a general route through any French sibling.

Type
Citizenship declaration through a qualifying sibling
Applicant
Born in France and living there habitually and lawfully since age 6
Sibling
Became French under the specified France-born child rules
Core records
Birth, residence, schooling, sibling relationship, and the sibling's citizenship basis
What it gives
If the declaration is accepted and registered, the applicant becomes French from the effective date of the declaration.
Main limit
This is not a family-reunification route and does not apply merely because a brother or sister is French.

Summary

France has a very narrow nationality declaration for an adult who was born and raised in France and whose brother or sister became French through France's own birth-and-childhood-residence rules.

This is not citizenship sponsorship by any French sibling. The sibling must have been born in France to foreign parents and acquired French nationality automatically at 18 or by the related declaration available from age 13 or 16. The applicant must also have been born in France, lived there habitually and lawfully since age 6, and completed compulsory schooling in France in schools subject to state control.

The route is acquisition by declaration. The 2026 nationality civic exam used for naturalization and reintegration by decree does not apply, but identity, residence, school history, the sibling relationship, the sibling's exact nationality basis, and criminal/public-order history are all checked.

Pathway fit check

Eligibility

The French sibling generally must:

The applicant generally must:

The siblings may share one or both parents, but the family link must be proved through full civil-status records. The applicant also needs official proof of how the sibling became French; a current French passport alone may not show the legal basis.

What This Route Allows

If the declaration is accepted and registered, the applicant becomes French from the effective date of the declaration. The person can obtain updated civil-status evidence, a French identity card, and a passport.

Eligible unmarried minor children who live with the applicant may sometimes benefit from collective effect if properly named and documented in the declaration.

What This Route Is Not

This is not a family-reunification route and does not apply merely because a brother or sister is French. A sibling who naturalized by decree, became French through marriage, inherited French nationality from a parent, or was adopted may be French but does not supply the specific sibling basis this declaration requires.

It is not available to an applicant born outside France, one who moved to France after age 6, or one who did not complete the required schooling in France. Long adult residence cannot repair those childhood conditions for this route, though ordinary naturalization may be possible.

Next Steps

  1. Obtain both siblings' full birth certificates and the parent records proving their relationship.
  2. Obtain a certificate, registered declaration, annotated birth record, or other official evidence showing that the sibling became French under Article 21-7 or 21-11.
  3. Create a complete residence timeline from the applicant's sixth birthday to the filing date, supported by residence permits and dated records.
  4. Request school certificates covering the entire compulsory-school period, including any transfers between schools.
  5. Gather the applicant's valid residence document, criminal records, and evidence addressing any absences from France.
  6. Check legalization/apostille and approved-translation requirements for foreign family records.
  7. Use the current official form and file through the competent nationality platform for the applicant's home in France.
Compare your options

Other routes in France.

Sources