| 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 | |