| Name | Meaning | Gender | Origin |
| Bear | Large mammal with large head, bulky body and coarse thick fur | Unisex | English |
| Bella | My God is a vow | Female | Hebrew |
| Belle | Beautiful | Female | French |
| Biscuit | A cookie or cracker | Unisex | English |
| Blackberry | Prickly shrub with small edible berries | Unisex | English |
| Blaze | Stuttering | Unisex | Latin |
| Blondie | Pale yellowish-brown | Unisex | French |
| Blossom | Blossom, flower | Female | English |
| Blue | Blue | Unisex | English |
| Bo | Handsome | Female | French |
| Bonnie | Pretty | Female | English |
| Boomer | A large full grown kangaroo. A baby boomer. | Unisex | English |
| Bows | | Unisex | Hebrew |
| Brady | Descendant of Brádach | Unisex | Gaelic |
| Brandy | Burning wine | Female | English |
| Brownie | Moist chocolate cake with nuts | Unisex | English |
| Bubba | | Unisex | Hebrew |
| Bubbles | Thin spherical liquid filled with gas. Irrepressible activity. | Unisex | English |
| Buster | One that breaks up something | Unisex | American English |
| Butch | Masculine in appearance or manner. | Unisex | American English |
| Buttercup | A bright yellow flowered plant. Also a term of endearment. | Unisex | English |
| Buttons | | Unisex | Hebrew |
| Cali | Most beautiful | Female | English |
| Callie | Most beautiful | Female | Greek |
| Candy | Honest | Female | Latin |
| Carly | Free man | Female | German |
| Carmela | Garden | Female | Hebrew |
| Cash | Cash | Unisex | English |
| Cassie | She who entangles men | Female | Greek |
| Charlie | Free man | Unisex | Germanic |