Paris - Île-de-France
- Clolus
- Clos
- Closson
- Clotilde
- Clouard
- Clout
- Clozier
- Co Invest Sas
- Coates
- Cocco
- Cochez
- Cocquebert
- Codognet
- Codomier
- Coeffe
- Coffinet
- Cogne
- Cohen Arazi
- Cohen Skalli
- Cohen Tanugi
- Cohen-skalli
- Cohen-tanugi
- Coillard
- Cointepas
- Cojan
- Cojean
- Cojocaru
- Cola
- Colecchia
- Coles
- Coletti
- Colladant
- Collart
- Collenot
- Colletta
- Collion
- Collomp
- Coloma
- Colon
- Colongo
- Colonne
- Colotte
- Colpaert
- Combaz
- Comin
- Commandeur
- Commeau
- Comment
- Commere
- Commereuc
- Comolet
- Comperat
- Condamin
- Conilh
- Connault
- Conrath
- Console
- Consolin
- Constanty
- Cont
- Contat Desfontaines
- Cools
- Coornaert
- Coquereau
- Coqueret
- Cor
- Corbe
- Corbett
- Corbi
- Corcia
- Corde
- Cordeau
- Cordel
- Cordella
- Cordelle
- Cordoliani
- Corfmat
- Cori
- Coric
- Corneau
- Cornevin
- Corniere
- Cornily
- Cornuot
- Corral
- Correas
- Corret
- Corsino
- Cortese
- Corveller
- Corvi
- Cosialls
- Coslin
- Cosnard
- Cosqueric
- Cossa
- Costamagna
- Costerousse
- Costi
- Costiou