| Name | Meaning | Gender | Origin |
|---|
| Basil | Majestic, royal, brave | Male | Greek |
| Baxter | baker | Male | English |
| Bear | Large mammal with large head, bulky body and coarse thick fur | Male | Animal |
| Beau | Handsome.
| Male | |
| Benji | after the movie | Unisex | |
| Benny | Blessed Son Of My Right Hand | Unisex | English |
| Bentley | from the moor, Farm where the grass bends | Male | English |
| Billy | resolute protection | Male | English |
| Biscuit | A cookie or cracker | Unisex | |
| 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 |
| Blitzen | | Unisex | Hebrew |
| Blondie | One with golden coloured hair | Male | |
| Blue | A colour between green and indigo. Gloomy or depressed. | Male | Color |
| Bo | Nickname made popular by actress Bo Derek.
| Male | Norse |
| Bodie | | Unisex | Hebrew |
| Bone | | Unisex | Hebrew |
| Bone | | Unisex | Hebrew |
| Boomer | A large full grown kangaroo. A baby boomer. | Unisex | |
| Brady | large-chested | Male | Irish |
| Brody | From the muddy place. Surname.
| Male | Irish |
| Brownie | Moist chocolate cake with nuts | Unisex | |
| Bruno | Brown
| Male | |
| Bruno | Brown
| Male | |
| Brutus | heavy, dull | Male | Latin |
| Bubba | | Male | Hebrew |