| Anton | | AHN-tawn (German), ahn-TON (Russian, Ukrainian), AHN-ton (Finnish) | German, Russian, Swedish, Norwegian, Danish, Icelandic, Dutch, Bulgarian, Ukrainian, Slovene, Macedo | |
| Apostol | | - | Bulgarian, Macedonian | |
| Asen | | - | Bulgarian | |
| Atanas | | - | Bulgarian, Macedonian | |
| Bilyana | | - | Bulgarian | |
| Bisera | | - | Bulgarian, Macedonian | |
| Bistra | | - | Bulgarian, Macedonian | |
| Blaga | | - | Bulgarian | |
| Blagorodna | | - | Macedonian, Bulgarian | |
| Blagoy | | - | Bulgarian | |
| Blagun | | - | Bulgarian, Macedonian | |
| Blaguna | | - | Macedonian, Bulgarian | |
| 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 | |