| Name | Meaning | Gender | Origin |
|---|
| Billy | Will, desire and helmet, protection | Male | Germanic |
| Biscuit | A cookie or cracker | Unisex | English |
| Bishop | Overseer | Male | English |
| Bisto | | Unisex | Hebrew |
| Blackjack | A leather covered hand weapon. A card game | Unisex | English |
| Blue | Blue | Unisex | English |
| Bobby | Bright fame | Unisex | Germanic |
| Boomerang | | Unisex | Hebrew |
| Boots | | Unisex | Hebrew |
| Boris | Battle, fight | Male | Slavonic |
| Bowser | | Unisex | Hebrew |
| Bradyn | Broad, wide | Male | English |
| Bran | Raven | Male | Welsh |
| 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 |
| Buck | He-goat | Male | English |
| Buddy | Herald | Male | English |
| Bullet | A metal cylinder shot from a rifle or gun. Used to express speed. | Unisex | English |
| Buster | One that breaks up something | Unisex | American English |
| Butch | Masculine in appearance or manner. | Unisex | American English |
| Buttons | | Unisex | Hebrew |
| Caesar | Long Hair | Male | Latin |
| Cairo | Victorious one | Unisex | Arabic |
| Capone | | Unisex | Hebrew |
| Captain | A captain | Unisex | English |
| Casper | Treasurer | Male | Persian |
| Cassidy | Curly | Male | Gaelic |
| Cassius | Empty | Male | Latin |
| Chad | Defense | Male | English |
| Charley | Free man | Unisex | German |
| Checkers | | Unisex | Hebrew |