Orléans 45000 - Centre
- Chhum
- Chia
- Chicaud
- Chinkhoyev
- Choiseau
- Chou
- Chouane Hericourt
- Choummanivong
- Chrétien
- Chéron
- Cimadevilla
- Cimignani
- Cinar
- Cinna
- Cissé
- Cizeau
- Clairicia
- Claudel
- Claveau
- Clavelier
- Clermont
- Clerzau
- Clet
- Clin
- Clouet
- Cluzel
- Coatmeur
- Coatrieux
- Coco
- Codorniu
- Cohou
- Coin
- Coince
- Colcomb
- Cole
- Colon de Franciosi
- Colonna
- Colpin
- Combe Laboissière
- Combot
- Come
- Communeau
- Compagnon
- Connault
- Constantin
- Coquant
- Coquereau
- Coquet
- Corbel
- Cordeiro
- Cordeiro de Abreu
- Cordonnier
- Cordora
- Cornu de La Fontaine
- Correia de Faria
- Cortet
- Cortijo
- Cortin
- Costache
- Costes
- Cotreuil
- Cottereau
- Cottier
- Cottin
- Coue
- Couf
- Couffi
- Coujour
- Coulanges
- Coulbeaut
- Coupe
- Courant
- Couratier
- Couratin
- Courcelle
- Courcelles
- Courte
- Courtemanche
- Courville
- Courvoisier
- Coutaud
- Coutenceau
- Coutin
- Couturaud
- Couture
- Couturiot
- Couvreux
- Coymes
- Crepin
- Crespin
- Creteur
- Crevel
- Cristian
- Crohin
- Croixmarie
- Croville
- Croze
- Crus
- Crusol
- Cuenot