| Name | Meaning | Gender | Origin |
|---|
| Blade | glory, The expanded part of a leaf, particularly grasses | Male | Word |
| Blaise | to lisp, stammer | Male | |
| Blaze | Lisp: stutter. Blaise Pascal was a brilliant seventeenth century child prodigy: mathematician: scientist and philosopher who invented the calculating machine and hydraulic press before dying at age thirty-nine.
| Male | Latin |
| Bling | | Unisex | Hebrew |
| Bliss | intense happiness | Male | English |
| Blithe | Cheerful | Unisex | English |
| Blitz | | Unisex | Hebrew |
| Blitzen | | Unisex | Hebrew |
| Blizzard | Violent snowstorm | Male | |
| Blondie | One with golden coloured hair | Male | |
| Blooper | | Unisex | Hebrew |
| Blu | | Unisex | Hebrew |
| Blu | | Unisex | Hebrew |
| Blubber | | Unisex | Hebrew |
| Blue | A colour between green and indigo. Gloomy or depressed. | Male | Color |
| Bluebelle | | Unisex | Hebrew |
| Bluebird | | Unisex | Hebrew |
| Blush | | Unisex | Hebrew |
| Bo | Nickname made popular by actress Bo Derek.
| Male | Norse |
| Bob | bright, famous | Male | English |
| Bobby | bright fame | Male | English |
| Bobo | | Male | Hebrew |
| Bocephus | | Unisex | Hebrew |
| Bodhi | awakening, enlightenment | Male | Sanskrit |
| Bodie | | Unisex | Hebrew |