| Name | Meaning | Gender | Origin |
|---|
| Batman | | Unisex | Hebrew |
| Baxter | baker | Male | English |
| Bean | Fair-Skinned | Male | Scottish |
| Bear | Large mammal with large head, bulky body and coarse thick fur | Male | Animal |
| Benji | after the movie | Unisex | |
| Benny | Blessed Son Of My Right Hand | Unisex | English |
| Bently | | Unisex | Hebrew |
| Bert | English, noble, bright | Male | English |
| Binx | black cat in the movie Hocus Pocus | Unisex | |
| Blackie | Of the colour black. | Unisex | |
| Blacky | | Male | Hebrew |
| 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 |
| Blue | A colour between green and indigo. Gloomy or depressed. | Male | Color |
| Bob | bright, famous | Male | English |
| Bobo | | Male | Hebrew |
| Boo | | Male | Hebrew |
| Boo | | Male | Hebrew |
| Boo | | Male | Hebrew |
| Boo | | Male | Hebrew |
| Boo Boo | | Unisex | Hebrew |
| BooBoo | | Unisex | Hebrew |
| Booger | | Unisex | Hebrew |
| Boomer | A large full grown kangaroo. A baby boomer. | Unisex | |
| Boots | | Male | Hebrew |
| Bootsie | Collins Pussycat | Unisex | |