| Name | Meaning | Gender | Origin |
|---|
| Blackie | Of the colour black. | Unisex | English |
| Blu | | Unisex | Hebrew |
| Blue | Blue | Unisex | English |
| Bo | Handsome | Female | French |
| Bobbie | Bright fame | Female | Germanic |
| Bobby | Bright fame | Unisex | Germanic |
| Bogey | | Unisex | Hebrew |
| Bolt | | Unisex | Hebrew |
| Bongo | Connected drums played by beating with hands. | Unisex | English |
| Boomer | A large full grown kangaroo. A baby boomer. | Unisex | English |
| Bossy | | Unisex | Hebrew |
| Boston | Botolph's town | Unisex | English |
| Bruiser | A large heavyset man | Unisex | English |
| Bubba | | Unisex | Hebrew |
| Buckles | | Unisex | Hebrew |
| Bullet | A metal cylinder shot from a rifle or gun. Used to express speed. | Unisex | English |
| Bumper | | Unisex | Hebrew |
| Buster | One that breaks up something | Unisex | American English |
| Butch | Masculine in appearance or manner. | Unisex | American English |
| Buttons | | Unisex | Hebrew |
| Cam | Man with crooked nose | Female | Gaelic |
| Captain | A captain | Unisex | English |
| Celine | Variant Of Celia Or Selena. One Of Seven Mythological Daughters Of Atlas Transformed By Zeus Into Stars Of The Pleiades Constellation. | Female | English |
| Charlie | Free man | Unisex | Germanic |
| Checkers | | Unisex | Hebrew |
| Chewy | Needing chewing. | Unisex | English |
| Chief | One in highest rank or authority. | Unisex | English |
| Chiquita | Small one | Female | Spanish |
| Chloe | Means | Female | English |
| Cinderella | Little ash girl | Female | English |