| Name | Meaning | Gender | Origin |
|---|
| Berry | White, Fair | Male | English |
| Bilbo Baggins | One of the hobbits in J.R. Tolkien's novels.
| Male | |
| Binky | | Unisex | Hebrew |
| Biscuit | A cookie or cracker | Unisex | |
| Bitsy | | Female | Hebrew |
| Bitty | Very small. Composed of fragments. | Unisex | |
| Blackberry | Prickly shrub with small edible berries | Female | |
| Blossom | lovely, A flower or cluster of flowers | Female | English |
| Bo Peep | | Female | Hebrew |
| Bon Bon | | Female | Hebrew |
| Bonbon | | Unisex | Hebrew |
| Bones | after doctor in Star Trek | Unisex | |
| Bonita | Pretty little one.
| Female | Spanish |
| Boo-Boo | | Unisex | Hebrew |
| Boots | | Male | Hebrew |
| Boris | A fighter, battler | Male | Slavic |
| Brendan | prince | Male | Irish |
| Brenna | Raven maid, dark-haired | Female | Irish |
| Brennan | Little drop: Prince. Variant of Brendan.
| Male | Irish |
| Brooke | small stream | Female | English |
| Bubble | | Unisex | Hebrew |
| Bubbles | Thin spherical liquid filled with gas. Irrepressible activity. | Male | |
| Bubbles | Thin spherical liquid filled with gas. Irrepressible activity. | Male | |
| Bugsy | | Male | Hebrew |
| Bullet | A metal cylinder shot from a rifle or gun. Used to express speed. | Male | |