Lorient 56100 - Bretagne
- Chaze
- Chemille
- Chemin
- Chenal-bordonnot
- Chenebaud
- Cheny
- Cherioux
- Cherruau
- Cheru
- Chesneau
- Chevallier
- Chevillard
- Chevray
- Chigot
- Chikha
- Chivot
- Chnafi Haigoune
- Chol
- Chollet
- Chopin
- Chrestien
- Christelle
- Ciaravola
- Cirtog
- Clairon
- Claisse
- Clemot
- Clenet
- Cleren
- Cleuziou
- Cliche
- Cloatre
- Clugery
- Coat
- Coatmelec
- Cochard
- Coche
- Cocher
- Cocoual
- Coguen
- Cohen
- Cohic
- Cohoner
- Cohonner
- Coiffard
- Coiffic
- Coignard
- Coince
- Coindet
- Colak
- Colmou
- Colo
- Colson
- Coniglio
- Conrad
- Conseil
- Conslin
- Coquelin
- Coquet
- Corbiere
- Corbierre
- Corbille
- Cordroch
- Coreau
- Corlou
- Cornaly
- Cornec
- Cornou
- Cornély
- Correia de Barros
- Corvellec
- Cosnier
- Costin
- Costiou
- Cote
- Cotte
- Cottereau
- Coudriet
- Coueffic
- Couf
- Cougoulic
- Courant
- Courbe
- Courcoul
- Courissaka
- Courtel
- Cousin
- Cousso
- Couturier
- Couy
- Cozette
- Coëffic
- Coïc
- Crahe
- Cravic
- Cravier
- Creff
- Cremel
- Creneguy
- Creput