Paris - Île-de-France
- Ciucci
- Ciulla
- Ciupac
- Civiero
- Civis
- Cizeron
- Clabaux
- Clady
- Clairice
- Clairin
- Clapot
- Claris
- Clasen
- Clasquin
- Classeau
- Claud
- Claudine
- Clausener
- Clausier
- Claustres
- Clautiaux
- Clauzier
- Claveria
- Clavijo
- Clavreuil
- Clayer
- Clayeux
- Clayton
- Cleirec
- Clemencet
- Clemencin
- Clemencon
- Clemens
- Clement Grandcourt
- Clements
- Clementz
- Clemessy
- Cleofe
- Clerempuy
- Cleren
- Clerice
- Clerin
- Clerte
- Cleton
- Clever
- Clevering
- Clier
- Clifford
- Cligny
- Clipal
- Clipet
- Cloatre
- Clocher
- Clochon
- Cloez
- Clop
- Cloppet
- Cloteaux
- Clou
- Cloup
- Cloute
- Cloutier
- Cluzaud
- Clémence
- Cnocquaert
- Coadic
- Coatalem
- Coban
- Cobigo
- Cobral
- Cobti
- Cocaign
- Cocard
- Cocault-duverger
- Cocca
- Cochener
- Cochois
- Cochon
- Cocito
- Cockenpot
- Cocozza
- Cocq
- Cocude
- Coda
- Codant
- Codo
- Codreanu
- Codsi
- Codur
- Coeffard
- Coelho Da Silva
- Coelho de Oliveira
- Coenca
- Coeroli
- Coester
- Coetmeur
- Coffineau
- Coffy
- Cognacq
- Cogordan