| Arseniy | | ahr-SYE-nee | Russian | |
| Artem | | - | Ukrainian, Belarusian, Russian | |
| Artemiy | | - | Russian | |
| Artur | | ər-TOOR (Portuguese), ar-TOOR (Galician), AHR-tuwr (Polish), AHR-toor (German) | Portuguese, Galician, Catalan, Polish, Russian, German, Estonian, Swedish, Romanian, Czech | |
| Artyom | | ahr-TYOM | Russian | |
| Asya | | AH-syah | Russian | |
| Avdotya | | - | Russian | |
| Avgust | | AHV-goost (Russian), AHV-hoost (Ukrainian) | Slovene, Russian, Ukrainian | |
| Avksentiy | | - | Russian | |
| Benedikt | | BE-ne-dikt (German), bye-nye-DEEKT (Russian), bee-nee-DEEKT (Russian) | German, Russian, Icelandic, Czech | |
| 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 | |
| Boleslav | | - | Czech, Russian, Medieval Slavic | |
| Boleslava | | - | Czech (Rare), Russian (Rare) | |
| Boris | | bah-REES (Russian), BO-ris (German), BAWR-is (English) | Bulgarian, Russian, Slovene, Croatian, Serbian, Macedonian, Georgian, German, History | |