| Biderbost | Bielander | Bieler | Biffiger |
| Bilgischer | Bill | Billens (de) | Billoud |
| Binder | Biner | Binner | Biolaz |
| Bioley | Biolla | Biollaz | Birbaum |
| Bircher | Bischoff | Biselx | Bissbort |
| Bitschin | Bitschnau | Bittel | Bitz |
| Blanc | Blanchard | Blanchet | Blanchoud |
| Blandrate (de) | Blantschen | Blatter | Blondel |
| Blondey | Blützer | Blumenthal | Boccard |
| Bochatay | Bochatey | Bodenmann | Bodenmüller |
| Bodmer | Bohler | Bohnet | Boissard |
| Boisset | Boitz | Boll | Bolli |
| Bollin | Bonani | Bomda | Bondat |
| Bondaz | Bonet | Bonfantin | Bonjean |
| Bonnard | Bons (de) | Bonvin | Boquis d’Allinges |
| Bordet | Borella | Borgeat | Borgeaud |
| Borghini | Borgnis | Bornet | Borra |
| Borri | Borter | Bortis | Boson |
| Bosson | Bossonnet | Bossotto | Bostelmann |
| Boulnoix | Bourban | Bourdin | Bourgeois |
| Bourguinet | Bournissen | Bouvier | Bovard |
| Bovard-GillabertBurlet | Boven | Bovet | Bovier |
| Branca | Brantschen | Bregy | Brenner |
| Bressoud | Breyton | Briand | Brid |
| Briggeler | Brigger | Briguet | Brindlen |
| Britonis de Collombey | Britsch | Briw | Broccard |
| Brochella | Brochellaz | Brochet | Brouchoud |
| Brousoz | Brouze | Brovetto | Bruchez |
| Bruchon | Bruel (von) | Brun | Brunelli |
| Brunet | Brunez | Brunner | Brunny |
| Bruno | Brunod | Brusatis (de) | Bruttin |
| Buchard | Buhagar | Bühlmann, Bielmann | Bulliet |
| Bullo | Bumann | Bürcher | Bürcher |
| Burdevet | Burgener | Burkard | Burket |
| Burnier | Buro | Burquier | Burri |
| Burrin | Burtin | Bussien | Buthet |
| Buthet | Buthey | Buthod | Butta |
| Buttet | Bützberger |