Rennes 35000 - Bretagne
- Cognet
- Cogné
- Cohic
- Coic
- Coirier
- Colcombet
- Coldefy
- Colet
- Coleu
- Colinet
- Collas
- Colleau
- Colling
- Collobert
- Collomb
- Coloigner
- Colombier
- Colson
- Combaud
- Combe
- Combes
- Combescot
- Comboue
- Come
- Comere
- Comier
- Commandoux
- Commault
- Commeureuc
- Conquerant
- Constantin
- Contin
- Coolen
- Coquard
- Coquer
- Coquin
- Coquio
- Corbillon
- Corcuff
- Cordeau
- Corlouer
- Corne
- Cornier
- Cornou
- Cornu-deschamps
- Cornée
- Corot
- Corouge
- Corpet
- Correia
- Corriette
- Corrio
- Corson
- Corvez
- Cos
- Cosnard
- Cosperec
- Cossec
- Cosset
- Cossic
- Cossin
- Costalat
- Coste
- Cotard
- Cotin
- Cotte
- Cottebrune
- Cotten
- Cottenceau
- Cotty
- Couabault
- Coubard
- Couchouron
- Coudron
- Couepel
- Couet
- Couety
- Cougnaud
- Couillard
- Couka
- Coulet
- Coupel
- Coupey
- Coupée
- Courcoux
- Couronné
- Courselaud
- Courtay
- Courteille
- Courtial
- Courtial Spiroux
- Courtiaud
- Courtillon
- Coutable
- Couteau
- Couvrand
- Couvreur
- Couzin
- Coyac
- Craignou

