| Name | Meaning | Gender | Origin |
|---|
| Boom | | Unisex | Hebrew |
| Boon | | Male | |
| Boone | a blessing | Male | English |
| Boots | | Male | Hebrew |
| Borg | Battle | Unisex | Norwegian |
| Bosch | | Unisex | Hebrew |
| Boss | An employer or supervisor | Unisex | |
| Bounce | | Unisex | Hebrew |
| Boy | A male child | Unisex | |
| Boz | | Unisex | Hebrew |
| Brad | English, wide meadow | Male | English |
| Brett | a native of Brittany, Briton | Male | Celtic |
| Brit | Of Bretagne, France | Unisex | Irish |
| Brooks | of the brook | Male | English |
| Bruce | thicket, woodlands | Male | Scottish |
| Bryce | Son of a nobleman
| Male | English |
| Buck | A fleet footed youth. Male deer. | Male | English |
| Bud | herald, to puff up, friend | Male | English |
| Bull | The adult male of certain large animals like cattle and elephants | Unisex | |
| Burt | fortress | Unisex | |
| Bush | | Unisex | Hebrew |
| Butch | Masculine in appearance or manner. | Male | Nickname |
| Buzz | To move quickly and busily, to bustle | Male | Modern |
| Cade | barrel | Male | English |
| Cain | and Able | Male | Hebrew |