| Name | Meaning | Gender | Origin |
|---|
| Belle | Beautiful | Female | French |
| Benny | Son of my right hand | Male | Hebrew |
| Bentley | Bent grass clearing | Male | English |
| Bess | Diminutive Of Elizabeth. | Female | Hebrew |
| 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 |
| Blossom | Blossom, flower | Female | English |
| Blue | Blue | Unisex | English |
| Bonnie | Pretty | Female | 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 |
| Brandy | Burning wine | Female | English |
| Brenda | Sword | Female | Norse |
| Briar | Thorny plant | Unisex | English |
| Bridie | The exalted one | Female | Gaelic |
| 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 |