| Blastus | - | Biblical Name | Blayke | - | English Name |
| Blayre | - | Scottish Name | Blaženka | - | Serbian Name |
| Blerung | - | Anglo Name | Bless | - | English Name |
| Blessie | - | Spanish Name | Blessing | - | English Name |
| Bleu | - | French Name | Blima | - | Hebrew Name |
| Bliss | - | Anglo Name | Blossom | - | English Name |
| Bluebell | - | English Name | Bluma | - | Australian Name |
| Blume | - | Yiddish Name | Bly | - | American Name |
| Blythe | - | Anglo Name | Bo | - | Chinese Name |
| Bo Kyung | - | Korean Name | Bo Mi | - | Korean Name |
| Bo Ra | - | Korean Name | Bo Ram | - | Korean Name |
| Boadicea | - | Anglo Name | Bobbi | - | American Name |
| Bobbie | - | English Name | Bochim | - | Biblical Name |
| Bodiccea | - | Anglo Name | Bodicea | - | Anglo Name |
| Bodicia | - | Anglo Name | Bodil | - | Norse Name |
| BOGDANA | - | Russian Name | Bogdana | - | Ukrainian Name |
| Bohdana | - | Russian Name | Bohuslava | - | Ukrainian Name |
| Bojana | - | Serbian Name | Bojanka | - | Serbian Name |
| Bok Soon | - | Korean Name | BOLESLAVA | - | Russian Name |
| Bonamy | - | French Name | Bonita | - | Spanish Name |
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