| Name | Meaning | Gender | Origin |
|---|
| Bat | Strong | Male | Mongolian |
| Baxter | Baker | Male | English |
| Bayard | Foolhardy | Male | English |
| Bear | Large mammal with large head, bulky body and coarse thick fur | Unisex | English |
| Beast | | Unisex | Hebrew |
| Beau | Handsome | Male | French |
| Beauregard | Beautiful gaze | Male | French |
| Beauty | One that is beautiful, especially a woman | Unisex | English |
| Beck | Dweller near the brook | Male | English |
| Belka | | Unisex | Hebrew |
| Ben | Son | Male | Hebrew |
| Bernard | Bear brave | Male | Germanic |
| Big | Of considerable size. | Unisex | English |
| Bill | Will, desire and helmet, protection | Male | Germanic |
| Bingo | A game where numbers are drawn and announced by a caller | Unisex | English |
| Biscuit | A cookie or cracker | Unisex | English |
| Bitsy | | Unisex | Hebrew |
| Black | Dark | Unisex | English |
| Blackie | Of the colour black. | Unisex | English |
| Blu | | Unisex | Hebrew |
| Blue | Blue | Unisex | English |
| Bob | Bright fame | Male | Germanic |
| Bobby | Bright fame | Unisex | Germanic |
| Bogey | | Unisex | Hebrew |
| Bolt | | Unisex | Hebrew |
| Bongo | Connected drums played by beating with hands. | Unisex | English |
| Boomer | A large full grown kangaroo. A baby boomer. | Unisex | English |
| Boris | Battle, fight | Male | Slavonic |
| Bossy | | Unisex | Hebrew |
| Boston | Botolph's town | Unisex | English |