Lorient 56100 - Bretagne
- Ciaravola
- Clairon
- Claustres
- Clemot
- Clenet
- Cleren
- Clery
- Cloatre
- Cloirec
- Cloitre
- Clugery
- Coatmelec
- Coche
- Cocher
- Cocherel
- Cocoual
- Coguen
- Cohen
- Cohic
- Coiffard
- Coiffic
- Coignard
- Coince
- Cointe
- Collober
- Colo
- Colson
- Combier
- Coniglio
- Conrad
- Conseil
- Conslin
- Corbe
- Corbiere
- Corbierre
- Corbille
- Corbou
- Cordroch
- Coreau
- Corlou
- Cornaly
- Cornec
- Cornou
- Cornély
- Corral
- Corvellec
- Costin
- Cote
- Cotte
- Cottereau
- Coudriet
- Coueffic
- Couf
- Cougoulic
- Courant
- Courbe
- Courcoul
- Courtai
- Courtel
- Courtemanche
- Cousso
- Couy
- Covents
- Cozette
- Coïc
- Crahe
- Crantelle
- Cravier
- Creignou
- Cremel
- Creneguy
- Creput
- Criquet
- Cristien
- Croissant
- Crombez
- Cruaud
- Cudon
- Curcio
- Cuzon
- Dacquay
- Daeron
- Dago
- Dalle
- Dalleau
- Damien
- Damour
- Dancray
- Dandine
- Danes
- Danic
- Danion
- Dantoine
- Dareths
- Daumas
- Dausse
- Davenel
- de La Reberdiere
- de Min
- de Oliveira