Change of filiation
Only a court may authorize a change of your child’s surname (following a claim, denial or recognition of maternity or paternity, etc.).
All other cases
Following a separation, if you want to add your surname to the surname entered on your child’s birth certificate, you must contact the Directeur de l'état civil. The other parent does not need to consent, but must be informed of your intention.
If you want to have the surname of the other parent removed from your child’s birth certificate, you must have serious reasons for doing so and obtain the consent of the other parent. If the child is aged 14 or over, he or she must also give consent.
