Dual nationality in France (2026)
Last reviewed: 9 October 2026
In short: French law does not require naturalised persons to give up their nationality. A French national who acquires another nationality loses French nationality only by declaration.
| Rule | What applies |
|---|---|
| Naturalisation: giving up the previous nationalityNationality rules | Not required [1] |
| Naturalisation: exceptions to giving up the previous nationalityNationality rules | None needed: French law does not require a foreigner who becomes French to give up their nationality. [1] |
| Voluntarily acquiring a foreign nationalityNationality rules | Loss only on declaration [2] |
| Loss of nationality on acquiring a foreign nationality: detailsNationality rules | An adult French national living habitually abroad who voluntarily acquires a foreign nationality keeps French nationality unless they expressly declare that they want to lose it. The declaration can be made from the filing of the foreign application until one year after the acquisition. [2] |
Sources
- Service-Public.fr (DILA): Peut-on avoir plusieurs nationalités en France ? (consulted 9 October 2026) · all sources
- Légifrance: Code civil, Section 1 : De la perte de la nationalité française (Articles 23 à 23-9) (consulted 9 October 2026) · all sources
Related pages
General information, not legal advice. Rules change: check the official source before you fly or ride.