| Name | Meaning | Gender | Origin |
|---|
| Berry | White, Fair | Male | English |
| Betty Boop | | Unisex | Hebrew |
| Big Boy | | Unisex | Hebrew |
| Bingo | A game where numbers are drawn and announced by a caller | Male | Word |
| Binkie | | Unisex | Hebrew |
| Binky | | Unisex | Hebrew |
| Bits | | Unisex | Hebrew |
| Bitty | Very small. Composed of fragments. | Unisex | |
| Bobo | | Male | Hebrew |
| Bonbon | | Unisex | Hebrew |
| Bongo | Connected drums played by beating with hands. | Unisex | |
| Bonsai | The art of growing dwarfed ornamental trees and shrubs. | Unisex | |
| Boo Boo | | Unisex | Hebrew |
| Boogie | | Unisex | Hebrew |
| Bootsy | | Unisex | Hebrew |
| Boris | A fighter, battler | Male | Slavic |
| Brendan | prince | Male | Irish |
| Brennan | Little drop: Prince. Variant of Brendan.
| Male | Irish |
| Brillo | Brand of pot cleaner - Brillo pads. | Unisex | |
| Brutus | heavy, dull | Male | Latin |
| 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 | |
| Bugsy | | Male | Hebrew |
| Bungee | | Male | |