| Name | Meaning | Gender | Origin |
|---|
| Boomer | A large full grown kangaroo. A baby boomer. | Unisex | English |
| Boots | | Unisex | Hebrew |
| Briar | Thorny plant | Unisex | English |
| Brutus | Heavy, slow, foolish | Male | Latin |
| Bubba | | Unisex | Hebrew |
| Bubbles | Thin spherical liquid filled with gas. Irrepressible activity. | Unisex | English |
| Buck | He-goat | Male | English |
| Buckley | Ram's clearing | Male | English |
| Bud | Brother. Nickname Used Since Medieval Times. | Male | English |
| Buddy | Herald | Male | English |
| Burrito | A flour tortilla wrapped around a filing of beef, beans or cheese | Unisex | English |
| Buster | One that breaks up something | Unisex | American English |
| Buttercup | A bright yellow flowered plant. Also a term of endearment. | Unisex | English |
| Canada | | Unisex | Hebrew |
| Casey | From Cayce | Male | American English |
| Cash | Cash | Unisex | English |
| Charlie | Free man | Unisex | Germanic |
| Chase | Huntsman | Male | English |
| Cheerio | Brand of breakfast cereal | Unisex | English |
| Chester | Camp | Male | Latin |
| Chewy | Needing chewing. | Unisex | English |
| Chuck | Free man | Male | German |
| Chucky | Free man | Unisex | German |
| Cinnamon | A spice | Female | Greek |
| Coco | A Pet Name. | Unisex | French |
| Cody | Descendant of Cuidighthigh | Male | Gaelic |
| Colt | Young male horse | Male | English |
| Cookie | A small flat, crisp cake | Unisex | English |
| Cooper | Barrel maker | Male | English |
| Copper | A reddish brown metal - as in copper penny coins. Also slang for a police officer. | Unisex | English |