| Name | Meaning | Gender | Origin |
|---|
| Batman | | Unisex | Hebrew |
| Bear | Large mammal with large head, bulky body and coarse thick fur | Male | Animal |
| Beavis | Shining one | Unisex | Greek |
| Beethoven | | Male | Hebrew |
| Benny | Blessed Son Of My Right Hand | Unisex | English |
| Bentley | from the moor, Farm where the grass bends | Male | English |
| Benz | | Male | Hebrew |
| Bergen | mountain dweller | Male | Scandinavian |
| Bergman | | Unisex | Hebrew |
| Bernie | Brave As A Bear | Unisex | German |
| Bert | English, noble, bright | Male | English |
| Bertie | Brilliant, Illuminated Fame | Male | English |
| Betty Boop | | Unisex | Hebrew |
| Bilbo Baggins | One of the hobbits in J.R. Tolkien's novels.
| Male | |
| Billy | resolute protection | Male | English |
| Bing | From the kettle shaped hollow
| Male | |
| Binky | | Unisex | Hebrew |
| Binx | black cat in the movie Hocus Pocus | Unisex | |
| Black Beauty | | Unisex | Hebrew |
| Black Jack | | Unisex | Hebrew |
| Blackie | Of the colour black. | Unisex | |
| Blackjack | A leather covered hand weapon. A card game | Unisex | |
| Blackster | | Unisex | |
| Blade | glory, The expanded part of a leaf, particularly grasses | Male | Word |
| Blaze | Lisp: stutter. Blaise Pascal was a brilliant seventeenth century child prodigy: mathematician: scientist and philosopher who invented the calculating machine and hydraulic press before dying at age thirty-nine.
| Male | Latin |