Paris - Île-de-France
- Courtaigne
- Courte
- Courteaud
- Courtonne
- Cousinou
- Coussegal
- Coussement
- Coussinet
- Cousson
- Coustal
- Coustaud
- Coustet
- Coustou
- Coutal
- Coutelen
- Coutheillas
- Couthouis
- Coutolleau
- Coutou
- Coutris
- Couval
- Couzy
- Covas
- Coviaux
- Covier
- Coy
- Coyac
- Coyle
- Coz
- Cozma
- Cracco
- Crampe
- Crampont
- Crane
- Craplet
- Crapoulet
- Craunot
- Crausaz
- Creange
- Creantor
- Cremoux
- Crenin
- Crepet
- Cressant
- Cresseaux
- Creste
- Crestin
- Cretegny
- Cretel
- Cretenet
- Creuse
- Cristiani
- Cristina
- Cristofari
- Cristofoli
- Crivelli
- Crocco
- Croci
- Croguennec
- Croize
- Croizier
- Crombecque
- Crouau
- Crozon
- Cru
- Cruanes
- Crèche
- Crépin
- Crété
- Cubells
- Cubero
- Cuccia
- Cuello
- Cugnier
- Cuiec
- Cuillier
- Cuinet
- Cuirassier
- Cuisiniez
- Cukrowicz
- Culafic
- Cullet
- Culos
- Cunanan
- Cupit
- Cureau
- Curnier
- Curot
- Cusey
- Cusin
- Cusse
- Cuvelette
- Cvetkovic
- Cygler
- Cyna
- Cyngiser
- Cynthia
- Cyr
- Cyvoct
- Czajka