| Name | Meaning | Gender | Origin |
|---|
| Barny | Brave As A Bear | Male | German |
| Baxter | Baker | Male | English |
| Baylee | Bailiff | Unisex | English |
| Bear | Large mammal with large head, bulky body and coarse thick fur | Unisex | English |
| Bell | Unisexual Name Meaning "Beauty." | Unisex | English |
| Benny | Son of my right hand | Male | Hebrew |
| Bentley | Bent grass clearing | Male | English |
| Bijou | Jewel | Unisex | French |
| Billy | Will, desire and helmet, protection | Male | Germanic |
| Biscuit | A cookie or cracker | Unisex | English |
| Bisto | | Unisex | Hebrew |
| Blackberry | Prickly shrub with small edible berries | Unisex | English |
| Blaze | Stuttering | Unisex | Latin |
| Blitz | | Unisex | Hebrew |
| Blondie | Pale yellowish-brown | Unisex | French |
| Blue | Blue | Unisex | English |
| Bonsai | The art of growing dwarfed ornamental trees and shrubs. | Unisex | English |
| Boomer | A large full grown kangaroo. A baby boomer. | Unisex | English |
| Boris | Battle, fight | Male | Slavonic |
| Bows | | Unisex | Hebrew |
| Brady | Descendant of Brádach | Unisex | Gaelic |
| Briar | Thorny plant | Unisex | English |
| Brody | Muddy place | Male | Gaelic |
| Bromley | Broom hill | Male | English |
| Brooks | A brook, stream | Male | English |
| Brownie | Moist chocolate cake with nuts | Unisex | English |
| Bubba | | Unisex | Hebrew |
| Bubbles | Thin spherical liquid filled with gas. Irrepressible activity. | Unisex | English |
| Buck | He-goat | Male | English |
| Buddy | Herald | Male | English |