| 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 | |
| Bogomir | | - | Slovene | |
| Bojan | | BO-yahn (Serbian, Croatian, Macedonian) | Serbian, Croatian, Slovene, Macedonian | |
| Bojana | | - | Slovene, Macedonian, Serbian, Croatian | |
| Bor | | - | Slovene | |
| Boris | | bah-REES (Russian), BO-ris (German), BAWR-is (English) | Bulgarian, Russian, Slovene, Croatian, Serbian, Macedonian, Georgian, German, History | |
| Borislav | | bah-ree-SLAHF (Russian) | Bulgarian, Serbian, Croatian, Slovene, Russian, Medieval Slavic | |
| Borut | | - | Slovene | |
| Branimir | | - | Croatian, Serbian, Bulgarian, Slovene | |
| Branislav | | - | Serbian, Slovak, Czech, Slovene, Croatian, Macedonian | |
| Branislava | | - | Serbian, Slovak, Czech, Slovene | |
| Branka | | - | Serbian, Croatian, Slovene | |
| Branko | | - | Serbian, Croatian, Slovene, Slovak, Macedonian | |
| Brigita | | - | Slovene, Croatian, Latvian | |