Rennes 35000 - Bretagne
- Climovich
- Clisson
- Cloerec
- Cloirec
- Cloteau
- Clouard
- Cluzel
- Coadour
- Coatanea
- Coatanroch
- Coateval
- Coatrieux
- Cobigo
- Cobut
- Cocherel
- Cochevelou
- Cochin
- Cochonneau
- Codjia
- Coedelo
- Coeffe
- Coeurdacier
- Coeuret
- Coeuru
- Cogam
- Cognet
- Cogné
- Cogranne
- Coirier
- Colasse
- Colcombet
- Coldefy
- Colet
- Collas
- Colleau
- Colling
- Collobert
- Collyer
- Coloigner
- Colombier
- Colomes
- Colonne
- Combaud
- Combe
- Combescot
- Comboue
- Comby
- Come
- Comere
- Comier
- Commandoux
- Compain
- Compere
- Congard
- Conquerant
- Conte
- Coolen
- Coorenaert
- Copin
- Coquard
- Coquer
- Coquin
- Coquio
- Corbillon
- Corcuff
- Cordon
- Cordonnier
- Corlouer
- Cormand
- Corne
- Cornier
- Cornou
- Cornu-deschamps
- Corot
- Corpet
- Correia
- Corriette
- Corson
- Corvez
- Cos
- Cosnard
- Cosnefroy
- Cosperec
- Cossec
- Cosset
- Cossin
- Costalat
- Coste
- Cotiniaux
- Cotonnec
- Cotte
- Cottebrune
- Cotten
- Cottenceau
- Cottet
- Cotty
- Couabault
- Couanon
- Coubard
- Couchouron

