Paris - Île-de-France
- Cilpa
- Cimetiere
- Cimon
- Cimper
- Cindric
- Cinna
- Cinq
- Cinquini
- Cintract
- Ciocca
- Cioni
- Cipiere
- Cipolla
- Cippone
- Ciraolo
- Cirio
- Cirotteau
- Cissako
- Cistac
- Citadelle
- Citterio
- Citti
- Ciucci
- Ciulla
- Civis
- Cizeau
- Clairice
- Clairon
- Clairotte
- Clapin
- Clapot
- Clarenc
- Clarge
- Clari
- Claris
- Clarys
- Clasen
- Clasquin
- Classeau
- Claud
- Claudeon
- Claudet
- Clausener
- Claustres
- Clautiaux
- Clauzet
- Clauzier
- Claveria
- Clavery
- Clavijo
- Clavreuil
- Clayeux
- Clayton
- Clede
- Cleirec
- Clem
- Clemencon
- Clemens
- Clement Grandcourt
- Clements
- Cleofe
- Cleren
- Clergier
- Clerice
- Clerin
- Clerte
- Clerval
- Clet
- Cleton
- Clevering
- Clier
- Clifford
- Clio
- Clipal
- Clipet
- Cloatre
- Clocher
- Clochon
- Cloez
- Clop
- Cloppet
- Cloquet
- Cloteaux
- Clou
- Cloup
- Cloute
- Cluzaud
- Clémence
- Cnocquaert
- Coban
- Cobert
- Cobigo
- Cobo
- Cobti
- Cocaign
- Cocard
- Cocault
- Cocca
- Cocchi
- Cochener