| Name | Meaning | Gender | Origin |
|---|
| Bilbo | | Unisex | Hebrew |
| Bingo | A game where numbers are drawn and announced by a caller | Unisex | English |
| Bit | | Unisex | Hebrew |
| Bitsy | | Unisex | Hebrew |
| Blossom | Blossom, flower | Female | English |
| Bobo | On tuesday born | Unisex | African |
| Bongo | Connected drums played by beating with hands. | Unisex | English |
| Bonita | Pretty | Female | Spanish |
| Bonsai | The art of growing dwarfed ornamental trees and shrubs. | Unisex | English |
| Boots | | Unisex | Hebrew |
| Bootsy | | Unisex | Hebrew |
| Brenna | Hill | Female | Welsh |
| Brie | The exalted one | Female | Gaelic |
| Brillo | Brand of pot cleaner - Brillo pads. | Unisex | English |
| Brooke | A brook, stream | Unisex | English |
| Brynn | Hill | Unisex | Welsh |
| Bryony | Vine | Female | Greek |
| Bubbles | Thin spherical liquid filled with gas. Irrepressible activity. | Unisex | English |
| 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 | English |
| Bugsy | | Unisex | Hebrew |
| Bunny | Little rabbit | Female | English |
| Butterbean | | Unisex | Hebrew |
| Buttercup | A bright yellow flowered plant. Also a term of endearment. | Unisex | English |
| Buttons | | Unisex | Hebrew |
| Caligula | Little boots | Unisex | Latin |
| Candy | Honest | Female | Latin |
| Caramel | A smooth chewy candy | Unisex | English |
| Carina | Beloved | Female | Latin |
| Carlotta | Free man | Female | German |
| Carly | Free man | Female | German |