| Name | Meaning | Gender | Origin |
|---|
| Bianca | white | Female | Italian |
| Bibi | lady of the house | Female | |
| Bijou | French for jewel | Female | |
| Billie | Determination: strength. A nickname for William.
| Female | English |
| Billy | resolute protection | Male | English |
| Binki | | Unisex | Hebrew |
| Binx | black cat in the movie Hocus Pocus | Unisex | |
| Bird | Bird | Male | English |
| Birdie | bird | Female | English |
| Biscuit | A cookie or cracker | Unisex | |
| Bishop | a bishop | Male | English |
| Bitsy | | Female | Hebrew |
| Bitty | Very small. Composed of fragments. | Unisex | |
| Blackberry | Prickly shrub with small edible berries | Female | |
| Blackie | Of the colour black. | Unisex | |
| Blackjack | A leather covered hand weapon. A card game | Unisex | |
| Blade | glory, The expanded part of a leaf, particularly grasses | Male | Word |
| Blaise | to lisp, stammer | Male | |
| Blanca | white | Female | Spanish |
| 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 |
| Bleu | blue | Female | |
| Bling | | Unisex | Hebrew |
| Bliss | intense happiness | Male | English |
| Blithe | Cheerful | Unisex | English |
| Blitz | | Unisex | Hebrew |