Rennes 35000 - Bretagne
- Clemence
- Clemenceau
- Cleret
- Clermont
- Climovich
- Cloerec
- Cloirec
- Clop
- Cloteau
- Coadour
- Coatanroch
- Coatrieux
- Cobut
- Cocard
- Cocherel
- Cochevelou
- Cochin
- Cochonneau
- Codjia
- Coedelo
- Coeffe
- Coeffé
- Coeur-quetin
- Coeuret
- Coffinet
- Cogne
- Cognet
- Cogné
- Cogranne
- Coirier
- Cojan
- Colasse
- Colcombet
- Collas
- Colleau
- Colling
- Collobert
- Collu
- Collyer
- Colléaux
- Coloigner
- Colombier
- Colomes
- Colonne
- Coly
- Combe
- Combescot
- Comboue
- Comby
- Come
- Comere
- Comier
- Comite Etablissement Renault
- Commandoux
- Commolet
- Compain
- Compere
- Conduche
- Conga
- Congard
- Conquerant
- Copin
- Copy
- Coquelin Caroline
- Coquer
- Coquillon
- Coquin
- Coquio
- Cora
- Corain
- Cordion
- Cordon
- Corfmat
- Corne
- Cornier
- Cornillaut
- Cornou
- Cornu-deschamps
- Corot
- Corouge
- Corpet
- Correia
- Corson
- Corvec
- Cos
- Cosnard
- Cosperec
- Cossec
- Cossin
- Costalat
- Coste
- Costo
- Cotiniaux
- Cotonnec
- Cottebrune
- Cottenceau
- Cottet
- Cotty
- Couabault
- Coualan