Concarneau 29900 - Bretagne
- Bercegeay
- Berlivet
- Berthelot
- Bertic
- Bertrand
- Bertucat
- Bescon
- Besombes
- Bessis
- Bidaud
- Biger
- Bilien
- Billon
- Blambert
- Blouch
- Bochard
- Bodereau
- Boennec
- Bohic
- Boileau
- Bolzer
- Bonnete
- Bonnin
- Boquet
- Bordier
- Bosquet
- Bossard
- Boucheron
- Bouget
- Bouilland
- Boulakhras
- Boulanger
- Bourbon
- Bourc'his
- Bourgeon
- Boustouler
- Bouvais
- Brabant
- Brehonnet
- Breut
- Briec
- Briec Guillou
- Brindelle
- Bris
- Brive
- Brochen
- Bruneau
- Brunel
- Bruno
- Buffa
- Buson
- Cabellan
- Cabioch
- Camenen
- Cante
- Cardinal
- Carriou
- Carré
- Carval
- Castric
- Caudal
- Caugant
- Cavellec
- Cavezzan
- Celton
- Chabrier
- Charles
- Chartier
- Charton
- Chatelain
- Chenais
- Chesse
- Christiane
- Chupin
- Claquin
- Claudic
- Claustre
- Cliquet
- Cocquelin
- Cohic
- Cojean
- Colomb
- Coppola
- Coquelle
- Coquet
- Corderoch
- Cormier
- Cornou
- Cornuau
- Corvaisier
- Cosquer
- Cossec
- Cotonnec
- Couliou
- Courtin
- Coutelet
- Coz
- Crechmine
- Creuzet
- Croville
