| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 301 | Betty | English | A diminutive of Elizabeth, meaning My God is plentiful, frequently used as an independent name since the 18th century. US actress Betty Grable. | F | |
| 302 | Beverlee | English | Beaver stream. | F | |
| 303 | Beverley | English | Beaver stream, woman from the beaver meadow. Derived from a surname and place name. First used as a boy's first name in the late 19th century, it gradually came to be used also as a girl's name, although Beverly is the more common feminine form. | F | |
| 304 | Beverly | English | Woman from the beaver meadow. Beaver stream. | F | |
| 305 | Billie | English | Determination; strength. A nickname for William. Often combined with other names - Billie-jean and Billie Jo. | F | |
| 306 | Bina | English | Originally a diminutive used for names ending in -bina, like Albina, Columbina, and Robina, now frequently used as an independent name. | F | |
| 307 | Birdena | English | Contemporary name meaning Little bird. | F | |
| 308 | Birdie | English | Contemporary name meaning Little bird; birdlike. | F | |
| 309 | Birdine | English | Contemporary name meaning Little bird. | F | |
| 310 | Birdy | English | Birdlike. | F | |
| 311 | Blaire | English | Feminine form of Blair: Flatland. | F | |
| 312 | Blayre | English | Feminine form of Blair: Flatland. | F | |
| 313 | Blessing | English | Consecrated. | F | |
| 314 | Bletsung | English | Consecrated. | F | |
| 315 | Bliss | English | Joy. Cheer. | F | |
| 316 | Blisse | English | Joy. Cheer. | F | |
| 317 | Blithe | English | Cheerful. | F | |
| 318 | Bliths | English | Joy. | F | |
| 319 | Blondell | English | Fair-haired; blonde. Variant of the Spanish Blandina meaning flattering. | F | |
| 320 | Blondelle | English | Fair-haired; blonde. Variant of the Spanish Blandina meaning flattering. | F | |