| Name | Meaning | Gender | Origin |
|---|
| Beanie | | Unisex | Hebrew |
| Bear | Large mammal with large head, bulky body and coarse thick fur | Unisex | English |
| Beau | Handsome | Male | French |
| Bella | My God is a vow | Female | Hebrew |
| Benson | Son of Benedict | Male | English |
| Bentley | Bent grass clearing | Male | English |
| Bernie | Bear brave | Male | German |
| Beryl | Blue-green | Male | Greek |
| Billy | Will, desire and helmet, protection | Male | Germanic |
| Binky | | Unisex | Hebrew |
| Biscuit | A cookie or cracker | Unisex | English |
| Blackie | Of the colour black. | Unisex | English |
| Blaze | Stuttering | Unisex | Latin |
| Bo | Handsome | Female | French |
| Bogey | | Unisex | Hebrew |
| 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 |
| Bram | Father of a multitude or many nations | Male | Hebrew |
| Brandy | Burning wine | Female | English |
| Brenda | Sword | Female | Norse |
| Brewster | Brewer of beer | Male | English |
| Brock | Badger | Male | English |
| Brownie | Moist chocolate cake with nuts | Unisex | English |
| Bryson | Son of Brice | Male | English |
| Buddy | Herald | Male | English |
| Bugsy | | Unisex | Hebrew |
| Bullet | A metal cylinder shot from a rifle or gun. Used to express speed. | Unisex | English |
| Bunny | Little rabbit | Female | English |
| Buster | One that breaks up something | Unisex | American English |