| Beti | | - | Macedonian | |
| Biljana | | - | Serbian, Macedonian, Croatian | |
| Bisera | | - | Bulgarian, Macedonian | |
| Bistra | | - | Bulgarian, Macedonian | |
| Blagica | | - | Macedonian | |
| Blagoj | | - | Macedonian | |
| Blagorodna | | - | Macedonian, Bulgarian | |
| Blagun | | - | Bulgarian, Macedonian | |
| Blaguna | | - | Macedonian, Bulgarian | |
| Blazhe | | - | Macedonian | |
| Boban | | - | Serbian, Macedonian | |
| Bogdan | | BAWG-dahn (Polish), BOG-dahn (Serbian, Croatian), bog-DAHN (Romanian) | Polish, Russian, Slovene, Bulgarian, Serbian, Croatian, Macedonian, Romanian, Medieval Slavic | |
| Bogdana | | bawg-DAH-nah (Polish) | Polish, Russian, Slovene, Bulgarian, Serbian, Macedonian, Romanian, Medieval Slavic | |
| Bogomil | | - | Bulgarian, Macedonian | |
| Bojan | | BO-yahn (Serbian, Croatian, Macedonian) | Serbian, Croatian, Slovene, Macedonian | |