| Name | Meaning | Gender | Origin |
|---|
| Bugsy | | Unisex | Hebrew |
| Bumper | | Unisex | Hebrew |
| 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 |
| Buzz | To move quickly and busily, to bustle | Male | English |
| Byron | At the cattle sheds | Male | English |
| Caesar | Long Hair | Male | Latin |
| Captain | A captain | Unisex | English |
| Carlos | Free man | Male | German |
| Casey | From Cayce | Male | American English |
| Casper | Treasurer | Male | Persian |
| Castor | Beaver | Unisex | Greek |
| Chad | Defense | Male | English |
| Charles | Free man | Male | Germanic |
| Charlie | Free man | Unisex | Germanic |
| Cheddar | | Unisex | Hebrew |
| Chewy | Needing chewing. | Unisex | English |
| Chico | Boy | Male | Spanish |
| Chief | One in highest rank or authority. | Unisex | English |
| Chip | Free man | Male | German |
| Chipper | Lively spirits, cheerful. Chip off the old block. | Unisex | English |
| Chopsticks | | Unisex | Hebrew |
| Chum | | Unisex | Hebrew |
| Coby | Supplanter | Unisex | Hebrew |
| Coco | A Pet Name. | Unisex | French |
| Cocoa | Cocoa Jumbo | Unisex | English |
| Cody | Descendant of Cuidighthigh | Male | Gaelic |
| Cole | Coal | Male | English |