| Name | Meaning | Gender | Origin |
|---|
| Billy | resolute protection | Male | English |
| Biscuit | A cookie or cracker | Unisex | |
| Blade | glory, The expanded part of a leaf, particularly grasses | Male | Word |
| Blinky | | Male | Hebrew |
| Bobo | | Male | Hebrew |
| Bodhi | awakening, enlightenment | Male | Sanskrit |
| Bojangles | | Male | Hebrew |
| Bonkers | | Unisex | Hebrew |
| Bono | All Good | Male | English |
| Booger | | Unisex | Hebrew |
| Brad | English, wide meadow | Male | English |
| Brewster | brewer | Male | English |
| 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 | |
| Burgess | free citizen | Male | English |
| Burrito | A flour tortilla wrapped around a filing of beef, beans or cheese | Unisex | |
| Butt | | Unisex | Hebrew |
| Butter | | Unisex | Hebrew |
| Butterscotch | | Male | Hebrew |
| Buzz | To move quickly and busily, to bustle | Male | Modern |
| Calvin | Bald | Male | Latin |
| Capone | | Male | Hebrew |
| Captain | One who commands or leads others. Officer in command of ship, aircraft, police or fire station. | Male | |