| Name | Meaning | Gender | Origin |
|---|
| Bear | Large mammal with large head, bulky body and coarse thick fur | Unisex | English |
| Bela | Within | Female | Hungarian |
| Bianca | White | Female | Italian |
| Bindiya | | Female | Hebrew |
| Biscuit | A cookie or cracker | Unisex | English |
| Black | Dark | Unisex | English |
| Blackberry | Prickly shrub with small edible berries | Unisex | English |
| Blackie | Of the colour black. | Unisex | English |
| Blackjack | A leather covered hand weapon. A card game | Unisex | English |
| Blakeley | From The Dark Meadow | Unisex | English |
| Blanca | White | Female | Spanish |
| Blanche | White | Female | French |
| Blaze | Stuttering | Unisex | Latin |
| Blizzard | Violent snowstorm | Unisex | English |
| Blondie | Pale yellowish-brown | Unisex | French |
| Blu | | Unisex | Hebrew |
| Blue | Blue | Unisex | English |
| Blueberry | | Unisex | Hebrew |
| Bonnie | Pretty | Female | English |
| Brandy | Burning wine | Female | English |
| Brenna | Hill | Female | Welsh |
| Bronwyn | White breast | Female | Welsh |
| Brownie | Moist chocolate cake with nuts | Unisex | English |
| Butter | | Unisex | Hebrew |
| Buttercup | A bright yellow flowered plant. Also a term of endearment. | Unisex | English |
| Butters | After the character in the South Park cartoons | Unisex | English |
| Butterscotch | | Unisex | Hebrew |
| Caltha | Yellow Flower | Female | Latin |
| Calypso | Conceal | Female | Greek |
| Cam | Man with crooked nose | Female | Gaelic |