SIREN
Systeme d'Identification du Repertoire des ENtreprises
Published 2026-04-20. Last updated 2026-04-20.
The nine-digit number that identifies a French company. It is issued by INSEE when the business is registered and does not change. Under the French e-invoicing reform it is also the basis of the company's electronic invoicing address, which is why an invoice sent to a French customer is addressed to a SIREN rather than to an email address.
See also
- SIRET(Systeme d'Identification du Repertoire des ETablissements)
- Annuaire de la facturation electronique(French e-invoicing directory)
- Peppol(Pan-European Public Procurement Online)