Rennes 35000 - Bretagne
- Cloirec
- Closier
- Cloteau
- Clouard
- Cluzel
- Coatanea
- Coatanroch
- Coateval
- Cobigo
- Cobut
- Cocherel
- Cochevelou
- Cochin
- Cochonneau
- Codjia
- Coedelo
- Coeffe
- Coelho
- Coeuret
- Coeuru
- Cogam
- Cognard
- Cognet
- Cogné
- Cohic
- Coic
- Coirier
- Colasse
- Colcombet
- Coldefy
- Colet
- Coleu
- Colinet
- Collas
- Colleau
- Colling
- Collobert
- Coloigner
- Colombier
- Colonne
- Colson
- Combe
- Combes
- Combescot
- Comboue
- Come
- Comere
- Comier
- Commandoux
- Commault
- Compain
- Compere
- Conquerant
- Conte
- Coolen
- Copin
- Coquard
- Coquer
- Coquin
- Coquio
- Corbillon
- Corcuff
- Cordeau
- Cordon
- Cordonnier
- Corlouer
- Corne
- Cornier
- Cornou
- Cornu-deschamps
- Cornée
- Corot
- Corouge
- Corpet
- Correia
- Corriette
- Corson
- Corvez
- Cos
- Cosnard
- Cosperec
- Cossec
- Cosset
- Cossic
- Cossin
- Costalat
- Coste
- Cotard
- Cotiniaux
- Cotte
- Cottebrune
- Cottenceau
- Cotty
- Couabault
- Coubard
- Couchouron
- Coudron
- Couepel
- Couet
- Couety

