| Name | Meaning | Gender | Origin |
|---|
| Binky | | Unisex | Hebrew |
| Biscuit | A cookie or cracker | Unisex | English |
| Black | Dark | Unisex | English |
| Blackie | Of the colour black. | Unisex | English |
| Blackjack | A leather covered hand weapon. A card game | Unisex | English |
| Blake | Dark | Male | English |
| Blaze | Stuttering | Unisex | Latin |
| Blazer | | Unisex | Hebrew |
| Blizzard | Violent snowstorm | Unisex | English |
| Blu | | Unisex | Hebrew |
| Blue | Blue | Unisex | English |
| Bogart | Orchard | Male | German |
| Bojangles | | Unisex | Hebrew |
| Bongo | Connected drums played by beating with hands. | Unisex | English |
| Bonsai | The art of growing dwarfed ornamental trees and shrubs. | Unisex | English |
| Boo | | Unisex | Hebrew |
| Booger | | Unisex | Hebrew |
| Boone | Good | Male | French |
| Boris | Battle, fight | Male | Slavonic |
| Brady | Descendant of Brádach | Unisex | Gaelic |
| Brandon | Broom hill | Male | English |
| Branson | Sword | Male | Germanic |
| Bray | To Cry Out | Male | English |
| Brayden | Broad, wide | Male | English |
| Brazil | Brave, Strong In Conflict | Male | Celtic |
| Bronson | Brown's son | Male | English |
| Bruce | Surname Since Medieval Times: Now A Common Given Name. Folklore Tale Of 14Th Century Robert King Of Scotland: (The Bruce) Who Learned The Value Of Perseverance From Watching A Spider Spin A Web. | Male | English |
| Bruiser | A large heavyset man | Unisex | English |
| Brutus | Heavy, slow, foolish | Male | Latin |
| Bubba | | Unisex | Hebrew |