| Bliss | A state of perfect happiness. |
| Blisse | Joy: cheer. Used from medieval times. |
| Blithe | Showing a casual, cheerful lack. |
| Bliths | A variant form of the word bliss. |
| Blix | A name meaning happy or lucky one. |
| Blodwen | A name meaning blessed flower. |
| Blodwyn | A name meaning fair or white flower. |
| Blondell | Fair-haired: blonde. Variation of the Spanish Blandina meaning flattering. |
| Blondelle | Fair-haired: blonde. Variation of the Spanish Blandina meaning flattering. |
| Blondene | Fair-haired: blonde. Variation of the Spanish Blandina meaning flattering. |
| Blossom | A flower or a blooming state. |
| Blostm | An archaic spelling of blossom. |
| Blue | The color of the clear sky or sea. |
| Bluebell | A delicate bellshaped flower. |
| Bluinse | A name of uncertain origin. |
| Bluma | A flower, bloom |
| Bly | A name meaning to be cheerful. |
| Blyana | A name meaning joyful spirit. |
| Blyss | Joy: cheer. Used from medieval times. |
| Blysse | Joy: cheer. Used from medieval times. |
| Blythe | A name meaning carefree and gay. |
| Bo | Attractive; Nickname Made Popular by Actress Derek |
| Boadicea | A queen of the Iceni Victory |
| Bobbe | Bright Fame; Strange; Foreign |
| Bobbee | Bright Fame; Strange |
| Bobbette | A feminine diminutive of Robert, bright. |
| Bobbi | Modern diminutive of Roberta and Barbara. |
| Bobby | Abbreviation of Robert. |
| Bobbye | A feminine spelling meaning bright fame. |
| Bobette | A small or feminine version of Robert. |
| Bobi | A cute, short form meaning bright fame. |
| Bobina | A feminine name meaning bright in glory. |
| Bobine | A diminutive form meaning bright fame. |
| Bobinette | A small, feminine form of Robert name. |
| Boby | A variant spelling meaning bright fame. |
| Bochim | The place of weeping, or of mulberry-trees. |
| Bodgana | A name meaning gods given. |
| Bodhana | Clever; Wise; Enlightening; Teacher |
| Bodhani | A name meaning enlightened. |
| Bodhi | Awakens.; Enlightenment |