| Name | Meaning | Gender | Origin |
|---|
| Beloved | | Female | Hebrew |
| Biscuit | A cookie or cracker | Unisex | |
| Blue Eyes | | Unisex | Hebrew |
| Bohumil | | Unisex | Hebrew |
| Boo | | Male | Hebrew |
| Boo | | Male | Hebrew |
| Boo | | Male | Hebrew |
| Boo | | Male | Hebrew |
| Boo Bear | | Unisex | Hebrew |
| Boo-Boo | | Unisex | Hebrew |
| Boy | A male child | Unisex | |
| Braveheart | | Unisex | Hebrew |
| Bright Eyes | | Unisex | Hebrew |
| Brisa | From Briseis the woman Achilles loved in Homer's Iliad.
| Female | Spanish |
| Britches | | Unisex | Hebrew |
| Brown Sugar | | Unisex | Hebrew |
| Bubba | | Male | Hebrew |
| Bubba | | Male | Hebrew |
| Bubbles | Thin spherical liquid filled with gas. Irrepressible activity. | Male | |
| Bubbles | Thin spherical liquid filled with gas. Irrepressible activity. | Male | |
| Bug | An insect. A disease-producing microorganism. An error in coding or logic that causes a malfunction in a computer a program. An electronic listening device. An enthusiasm. Slang for annoy. | Unisex | |
| Bunny | little rabbit | Female | Nickname |
| Buttercup | A bright yellow flowered plant. Also a term of endearment. | Female | |
| Butterfly | Butterfly | Female | English |
| Butterscotch | | Male | Hebrew |