| Name | Meaning | Gender | Origin |
|---|
| Black Panther | | Unisex | |
| Black Puma | | Unisex | |
| Blackberry | Prickly shrub with small edible berries | Female | |
| Blackest | | Unisex | |
| Blackie | Of the colour black. | Unisex | |
| Blackjack | A leather covered hand weapon. A card game | Unisex | |
| Blackout | | Unisex | Hebrew |
| Blackster | | Unisex | |
| Blacktop | | 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 |
| Blizzard | Violent snowstorm | Male | |
| Blue | A colour between green and indigo. Gloomy or depressed. | Male | Color |
| Bobby | bright fame | Male | English |
| Bobo | | Male | Hebrew |
| Boots | | Male | Hebrew |
| Bowtie | | Unisex | Hebrew |
| Brian | strong | Male | Irish |
| Bruce | thicket, woodlands | Male | Scottish |
| Bruno | Brown
| Male | |
| Bruno | Brown
| Male | |
| Bubbles | Thin spherical liquid filled with gas. Irrepressible activity. | Male | |
| Bubbles | Thin spherical liquid filled with gas. Irrepressible activity. | Male | |
| Buddy | From Budd - The welcome messenger. | Male | English |
| Buddy | From Budd - The welcome messenger. | Male | English |