| Name | Meaning | Gender | Origin |
|---|
| Bobo | On tuesday born | Unisex | African |
| Bongo | Connected drums played by beating with hands. | 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 |
| Boone | Good | Male | French |
| Boots | | Unisex | Hebrew |
| Brady | Descendant of Brádach | Unisex | Gaelic |
| Bram | Father of a multitude or many nations | Male | Hebrew |
| Bran | Raven | Male | Welsh |
| Brandan | Beacon On The Hill Or Gorse-Covered Hill. | Male | English |
| Brandy | Burning wine | Female | English |
| Bree | The exalted one | Female | Gaelic |
| Brenda | Sword | Female | Norse |
| Brenna | Hill | Female | Welsh |
| Brennan | Descendant of Braonán | Male | Gaelic |
| Briar | Thorny plant | Unisex | English |
| Bridget | The exalted one | Female | Gaelic |
| Brody | Muddy place | Male | Gaelic |
| Brogan | Shoe | Unisex | Gaelic |
| Brone | Sorrowful | Male | English |
| Bubba | | Unisex | Hebrew |
| Buckley | Ram's clearing | Male | English |
| Bud | Brother. Nickname Used Since Medieval Times. | Male | English |
| Buddy | Herald | Male | English |
| Bugsy | | Unisex | Hebrew |
| Bunny | Little rabbit | Female | English |
| Buster | One that breaks up something | Unisex | American English |
| Caesar | Long Hair | Male | Latin |
| Cain | A spear | Male | Hebrew |