Lorient 56100 - Bretagne
- Bougoussa
- Bouilland
- Boulatoff
- Boulbar
- Boulbard
- Boulo
- Bounouar
- Bourasseau
- Bourbon
- Bourdais
- Bourdiec
- Bourdon
- Bourg
- Bourles
- Bourlot
- Boury
- Boussaid
- Bouteiller
- Bouter
- Boutet
- Bouthiaux
- Boëdec
- Branchoux
- Braquehais
- Braud
- Brault
- Brechard
- Bregent
- Brelivet
- Bremond
- Brianceau
- Brichard
- Briend
- Briere
- Briesinger
- Briffaut
- Brinon
- Brinquin
- Briquet
- Bris
- Brisson
- Brivoal
- Brossier
- Bruelle
- Bruhat
- Brun
- Brunot
- Bruschi
- Brélivet
- Budon
- Buffiere
- Buhe
- Bui
- Burgaud
- Burlot
- Busch
- Busson
- Busuttil
- Bé
- Bégot
- Bénéteau
- Cabon
- Caby
- Cacan
- Cadiou
- Cagnec
- Caheric
- Caillet
- Cailleux
- Caillibot
- Cales
- Calis
- Callac
- Calloc'h
- Campagne
- Canévet
- Capelle
- Capillon
- Capon
- Capp
- Cappe
- Carcel
- Cardiet
- Cardonne
- Careo
- Carlier
- Carman
- Carnec
- Caro
- Carrer
- Carreric
- Carrier
- Carrio
- Carteron
- Carvalho
- Castanie
- Castelot
- Castot
- Castro
- Catherine-joffrion