| Name | Meaning | Gender | Origin |
|---|
| Bullet | A metal cylinder shot from a rifle or gun. Used to express speed. | Unisex | English |
| Bullwinkle | | Unisex | Hebrew |
| Bully | An overbearing person, a ruffian | Unisex | English |
| Bumper | | Unisex | Hebrew |
| Bunky | | Unisex | Hebrew |
| Buster | One that breaks up something | Unisex | American English |
| Butch | Masculine in appearance or manner. | Unisex | American English |
| Butter | | Unisex | Hebrew |
| Buttercup | A bright yellow flowered plant. Also a term of endearment. | Unisex | English |
| Butterscotch | | Unisex | Hebrew |
| Buttons | | Unisex | Hebrew |
| Caesar | Long Hair | Male | Latin |
| Calvin | Bald | Male | French |
| Cameo | Delicate,carved relief | Unisex | English |
| Capone | | Unisex | Hebrew |
| Captain | A captain | Unisex | English |
| Casey | From Cayce | Male | American English |
| Cash | Cash | Unisex | English |
| Casper | Treasurer | Male | Persian |
| Chad | Defense | Male | English |
| Chance | Good fortune | Male | English |
| Chaos | Gaping void | Unisex | Greek |
| Charles | Free man | Male | Germanic |
| Charlie | Free man | Unisex | Germanic |
| Chase | Huntsman | Male | English |
| Chauncey | Chancellor: Fortune: A Gamble. | Male | English |
| Chaz | Free man | Male | German |
| Checkers | | Unisex | Hebrew |
| Cherokee | People Of A Different Speech. One Of The Largest American Indian Tribes. | Unisex | English |
| Chester | Camp | Male | Latin |