| Name | Meaning | Gender | Origin |
| Bess | Diminutive Of Elizabeth. | Female | Hebrew |
| Bingo | A game where numbers are drawn and announced by a caller | Unisex | English |
| Bitsy | | Unisex | Hebrew |
| Blackie | Of the colour black. | Unisex | English |
| Blaine | Yellow | Male | Gaelic |
| Bongo | Connected drums played by beating with hands. | Unisex | English |
| Bonnie | Pretty | Female | English |
| Bonsai | The art of growing dwarfed ornamental trees and shrubs. | Unisex | English |
| Bootsy | | Unisex | Hebrew |
| Brandy | Burning wine | Female | English |
| Brenda | Sword | Female | Norse |
| Brice | Dappled | Unisex | French |
| Bruce | Surname Since Medieval Times: Now A Common Given Name. Folklore Tale Of 14Th Century Robert King Of Scotland: (The Bruce) Who Learned The Value Of Perseverance From Watching A Spider Spin A Web. | Male | English |
| Bubbles | Thin spherical liquid filled with gas. Irrepressible activity. | Unisex | English |
| Buddy | Herald | Male | 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 | English |
| Bugsy | | Unisex | Hebrew |
| Bunny | Little rabbit | Female | English |
| Buster | One that breaks up something | Unisex | American English |
| Buttercup | A bright yellow flowered plant. Also a term of endearment. | Unisex | English |
| Buttons | | Unisex | Hebrew |
| Buzz | To move quickly and busily, to bustle | Male | English |
| Cal | Bald | Unisex | French |
| Calder | Uncertain, perhaps cold | Male | Norse |
| Calvin | Bald | Male | French |
| Camden | Uncertain, perhaps winding valley | Male | English |
| Cameron | Crooked nose | Unisex | Gaelic |
| Candy | Honest | Female | Latin |
| Capone | | Unisex | Hebrew |
| Caprice | Whim | Female | French |