Lorient 56100 - Bretagne
- Chenal-bordonnot
- Cheny
- Cherioux
- Cherruau
- Cheru
- Chesnel
- Chigot
- Chopin
- Chrestien
- Christelle
- Churie
- Ciaravola
- Cipolla
- Claustres
- Clemot
- Clenet
- Cleren
- Cloirec
- Cloitre
- Coadou
- Coatmelec
- Cocaut
- Coche
- Cocher
- Cocoual
- Cocoual Levoeuf
- Coffi
- Coguen
- Cohen
- Cohic
- Coiffard
- Coiffic
- Coignard
- Coillot
- Cointe
- Colo
- Colobert
- Colon
- Colson
- Combier
- Coniglio
- Conrad
- Conseil
- Conslin
- Corbe
- Corbierre
- Corbihan
- Corbille
- Corbou
- Cordroch
- Coreau
- Corlou
- Corn
- Cornaly
- Cornec
- Cornou
- Cornély
- Corral
- Corvellec
- Cospain
- Cospérec
- Costin
- Cotte
- Cottereau
- Coueffic
- Couf
- Cougoulic
- Courant
- Courbe
- Courcoul
- Couriaut
- Courtai
- Courtel
- Courtemanche
- Couy
- Cozette
- Coïc
- Crantelle
- Crapart
- Cravier
- Creignou
- Cremel
- Creneguy
- Creput
- Crespel
- Creuzot
- Cristien
- Croissant
- Crombez
- Cruaud
- Cudon
- Curcio
- Cuzon
- d'acremont
- Da Costa
- Dacquay
- Daeron
- Dago
- Dalle
- Dalleau