| Name | Meaning | Gender | Origin |
|---|
| Batman | | Unisex | Hebrew |
| Bebe | baby | Female | English |
| Bella | Beautiful
| Female | English |
| Bella | Beautiful
| Female | English |
| Belle | Beautiful woman | Female | Short |
| Benji | after the movie | Unisex | |
| Benny | Blessed Son Of My Right Hand | Unisex | English |
| Bently | | Unisex | Hebrew |
| Billie | Determination: strength. A nickname for William.
| Female | English |
| Binx | black cat in the movie Hocus Pocus | Unisex | |
| Blackie | Of the colour black. | Unisex | |
| Blossom | lovely, A flower or cluster of flowers | Female | English |
| Bluebell | | Female | Hebrew |
| Bonnie | sweet and good | Female | Scottish |
| Boo Boo | | Unisex | Hebrew |
| BooBoo | | Unisex | Hebrew |
| Booger | | Unisex | Hebrew |
| Boomer | A large full grown kangaroo. A baby boomer. | Unisex | |
| Bootsie | Collins Pussycat | Unisex | |
| Boy | A male child | Unisex | |
| Bruiser | A large heavyset man | Unisex | |
| Buffy | God's promise | Female | English |
| Bug | An insect. A disease-producing microorganism. An error in coding or logic that causes a malfunction in a computer a program. An electronic listening device. An enthusiasm. Slang for annoy. | Unisex | |
| Bunny | little rabbit | Female | Nickname |
| Buttercup | A bright yellow flowered plant. Also a term of endearment. | Female | |