| Name | Meaning | Gender | Origin |
|---|
| Black | Dark | Male | English |
| Blade | glory, The expanded part of a leaf, particularly grasses | Male | Word |
| Blaine | thin, lean, source of a river | Male | Irish |
| Blaire | Field Of Battle. | Unisex | Scottish |
| Blaise | to lisp, stammer | Male | |
| Blake | fair-haired, pallid | Male | English |
| 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 |
| Blue | A colour between green and indigo. Gloomy or depressed. | Male | Color |
| Blues | | Unisex | Hebrew |
| Blur | | Male | Hebrew |
| Blush | | Unisex | Hebrew |
| Bo | Nickname made popular by actress Bo Derek.
| Male | Norse |
| Bob | bright, famous | Male | English |
| Bolt | | Unisex | Hebrew |
| Bond | tiller of the soil | Male | English |
| Bones | after doctor in Star Trek | Unisex | |
| Boo | | Male | Hebrew |
| Boo | | Male | Hebrew |
| Boo | | Male | Hebrew |
| Boo | | Male | Hebrew |
| Boom | | Unisex | Hebrew |