| Name | Meaning | Gender | Origin |
|---|
| Bongo | Connected drums played by beating with hands. | Unisex | English |
| Boo | | Unisex | Hebrew |
| Booger | | Unisex | Hebrew |
| Boomer | A large full grown kangaroo. A baby boomer. | Unisex | English |
| Boots | | Unisex | Hebrew |
| Boozer | Excessive alcoholic drinker | Unisex | English |
| Boston | Botolph's town | Unisex | English |
| Brie | The exalted one | Female | Gaelic |
| Brownie | Moist chocolate cake with nuts | Unisex | English |
| Brunhilda | Battle armour | Unisex | Germanic |
| Brutus | Heavy, slow, foolish | Male | Latin |
| Bubblegum | | Unisex | Hebrew |
| Bubbles | Thin spherical liquid filled with gas. Irrepressible activity. | Unisex | English |
| Bullet | A metal cylinder shot from a rifle or gun. Used to express speed. | Unisex | English |
| Bullwinkle | | Unisex | Hebrew |
| Bumper | | Unisex | Hebrew |
| Burrito | A flour tortilla wrapped around a filing of beef, beans or cheese | Unisex | English |
| Buster | One that breaks up something | Unisex | American English |
| Buttercup | A bright yellow flowered plant. Also a term of endearment. | Unisex | English |
| Butters | After the character in the South Park cartoons | Unisex | English |
| Cadbury | Brand of chocolate | Unisex | English |
| Calamity | | Unisex | Hebrew |
| Calypso | Conceal | Female | Greek |
| Cha-cha | | Unisex | Hebrew |
| Chalupa | | Unisex | Hebrew |
| Chance | Good fortune | Male | English |
| Chaos | Gaping void | Unisex | Greek |
| Charlotte | Free man | Female | Germanic |
| Chewy | Needing chewing. | Unisex | English |
| Chica | Pet Name Meaning Little Girl. | Unisex | English |