| Name | Meaning | Gender | Origin |
|---|
| Bob | bright, famous | Male | English |
| Bogie | | Male | Hebrew |
| Boo | | Male | Hebrew |
| Boo | | Male | Hebrew |
| Boo | | Male | Hebrew |
| Boo | | Male | Hebrew |
| Boots | | Male | Hebrew |
| Boris | A fighter, battler | Male | Slavic |
| Braveheart | | Unisex | Hebrew |
| Bubba | | Male | Hebrew |
| Bubba | | Male | Hebrew |
| Bubbles | Thin spherical liquid filled with gas. Irrepressible activity. | Male | |
| Bubbles | Thin spherical liquid filled with gas. Irrepressible activity. | Male | |
| Buddha | | Unisex | Hebrew |
| Buddy | From Budd - The welcome messenger. | Male | English |
| Buddy | From Budd - The welcome messenger. | Male | English |
| Buster | One that breaks up something | Male | Modern |
| Button | | Unisex | Hebrew |
| Buzby | | Male | Hebrew |
| Cadbury | Brand of chocolate | Unisex | |
| Calypso | Greek for concealor. A type of music originating in the West Indies. Also a satellite of Saturn. | Male | Greek |
| Cappucino | | Male | |
| Casanova | A man who is gallantly attentive to women. | Male | |
| Casper | Master of the treasure | Male | Dutch |
| Castor | pious one | Male | Greek |