| Name | Meaning | Gender | Origin |
|---|
| Bonzai | | Unisex | Hebrew |
| Boo | | Male | Hebrew |
| Boo | | Male | Hebrew |
| Boo | | Male | Hebrew |
| Boo | | Male | Hebrew |
| Boo-Boo | | Unisex | Hebrew |
| Boogie | | Unisex | Hebrew |
| Boomer | A large full grown kangaroo. A baby boomer. | Unisex | |
| Boots | | Male | Hebrew |
| Boston | | Male | Hebrew |
| Bouhaki | | Unisex | Hebrew |
| Bouncer | One who bounds up and down | Unisex | |
| Boxer | | Unisex | Hebrew |
| Bradley | broad meadow | Male | English |
| Brayden | brave, broad | Male | Spelling |
| Bruno | Brown
| Male | |
| Bruno | Brown
| Male | |
| Brutus | heavy, dull | Male | Latin |
| Bubble | | Unisex | Hebrew |
| Buck | A fleet footed youth. Male deer. | Male | English |
| Bucky | | Unisex | Hebrew |
| Bucky Katt | | Unisex | Hebrew |
| Buford | | Unisex | Hebrew |
| 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 | |
| Bully | An overbearing person, a ruffian | Unisex | |