| Name | Meaning | Gender | Origin |
|---|
| Bentley | Bent grass clearing | Male | English |
| Blake | Dark | Male | English |
| Bob | Bright fame | Male | Germanic |
| Bobo | On tuesday born | Unisex | African |
| Bolt | | Unisex | Hebrew |
| Bongo | Connected drums played by beating with hands. | Unisex | English |
| Bonsai | The art of growing dwarfed ornamental trees and shrubs. | Unisex | English |
| Boots | | Unisex | Hebrew |
| Bowie | Yellow | Male | Gaelic |
| Briar | Thorny plant | Unisex | English |
| Brooke | A brook, stream | Unisex | English |
| Buck | He-goat | Male | English |
| Buckley | Ram's clearing | Male | English |
| Bud | Brother. Nickname Used Since Medieval Times. | 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 |
| Buster | One that breaks up something | Unisex | American English |
| Buzz | To move quickly and busily, to bustle | Male | English |
| Caesar | Long Hair | Male | Latin |
| Cal | Bald | Unisex | French |
| Calhoun | Warrior | Male | English |
| Carlton | Peasants' town | Male | English |
| Casey | From Cayce | Male | American English |
| Cash | Cash | Unisex | English |
| Cassidy | Curly | Male | Gaelic |
| Cassius | Empty | Male | Latin |
| Chaos | Gaping void | Unisex | Greek |
| Charles | Free man | Male | Germanic |
| Charlie | Free man | Unisex | Germanic |