| Name | Meaning | Gender | Origin |
|---|
| Baby | Baby | Unisex | American English |
| Bacardi | | Unisex | Hebrew |
| Baxter | Baker | Male | English |
| Bear | Large mammal with large head, bulky body and coarse thick fur | Unisex | English |
| Beatrice | Voyager through life | Female | Latin |
| Beau | Handsome | Male | French |
| Beauty | One that is beautiful, especially a woman | Unisex | English |
| Bella | My God is a vow | Female | Hebrew |
| Belle | Beautiful | Female | French |
| Beverly | Beaver stream | Male | English |
| Blake | Dark | Male | English |
| Blossom | Blossom, flower | Female | English |
| Bo | Handsome | Female | French |
| Bobbi | Bright fame | Female | Germanic |
| Boomer | A large full grown kangaroo. A baby boomer. | Unisex | English |
| Boone | Good | Male | French |
| Brandi | Burning wine | Female | English |
| Breezy | From Briseis The Woman Achilles Loved In Homer's Iliad. | Unisex | English |
| Brick | Bridge. | Male | English |
| Brittany | Land of the Britons | Female | English |
| Brooklyn | Uncertain, perhaps broken land | Unisex | Dutch |
| Bruiser | A large heavyset man | Unisex | English |
| Bruno | Armour | Male | Germanic |
| Brutus | Heavy, slow, foolish | Male | Latin |
| Bubba | | Unisex | Hebrew |
| Buddy | Herald | Male | English |
| Bullet | A metal cylinder shot from a rifle or gun. Used to express speed. | Unisex | English |
| Bully | An overbearing person, a ruffian | Unisex | English |
| Buster | One that breaks up something | Unisex | American English |
| Butch | Masculine in appearance or manner. | Unisex | American English |