| Name | Meaning | Gender | Origin |
|---|
| Blake | fair-haired, pallid | Male | English |
| Blanca | white | Female | Spanish |
| Blanche | white | Female | |
| 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 |
| Bleu | blue | Female | |
| Blizzard | Violent snowstorm | Male | |
| Blondie | One with golden coloured hair | Male | |
| Blu | | Unisex | Hebrew |
| Blu | | Unisex | Hebrew |
| Blue | A colour between green and indigo. Gloomy or depressed. | Male | Color |
| Bluebell | | Female | Hebrew |
| Bluebelle | | Unisex | Hebrew |
| Blueberry | | Unisex | Hebrew |
| Bones | after doctor in Star Trek | Unisex | |
| Bonnie | sweet and good | Female | Scottish |
| Bordeaux | | Unisex | Hebrew |
| Bowden | Blond
| Male | |
| Bowen | Son of Owen
| Male | Welsh |
| Bowie | after David Bowie | Male | Scottish |
| Brandy | An alcoholic liquor distilled from wine | Female | Dutch |
| Brenna | Raven maid, dark-haired | Female | Irish |
| Brick | Speckled | Male | Celtic |
| Bronson | son of Brown, son of the dark-skinned one | Male | English |
| Bronwyn | White-bosomed. | Female | Welsh |
| Bronze | | Unisex | Hebrew |