France citizenship: through your grandparent
Possible if the line stayed French and your family kept French ties (possession d'état).
What you'll need
- Government fee
- Free (the CNF procedure)
- Typical timeline
- 6 months to 1–3 years
- Where
- Pôle de la nationalité, Tribunal judiciaire de Paris
Whether this line carries citizenship depends on the specifics — dates of birth, naturalization timing, and whether the chain was ever broken. The free eligibility check walks your exact line and tells you which route applies and what documents you'll need.
Other ancestor paths
See if you qualify for France citizenship
Check your eligibility — freeNot affiliated with Tribunal / Service central or any government. A document-organization tool, not legal advice — always verify with the relevant authority.