| Name | Meaning | Gender | Origin |
|---|
| Bruno | Brown
| Male | |
| Buck | A fleet footed youth. Male deer. | Male | English |
| Bud | herald, to puff up, friend | Male | English |
| Buddy | From Budd - The welcome messenger. | Male | English |
| Buddy | From Budd - The welcome messenger. | Male | English |
| Buster | One that breaks up something | Male | Modern |
| Butch | Masculine in appearance or manner. | Male | Nickname |
| Captain | One who commands or leads others. Officer in command of ship, aircraft, police or fire station. | Male | |
| Champ | A champion. | Male | |
| Chance | French for luck | Male | |
| Charley | Manly | Unisex | English |
| Charlie | a man: variant of Carl.
| Male | English |
| Chaucer | maker of breeches | Male | English |
| Churchill | Lives at the church hill
| Male | English |
| Clancy | offspring of red-headed soldier | Male | Irish |
| Cliff | From Clifford - From the ford by the cliff. | Unisex | |
| Clifford | Lives by the ford near the cliff
| Male | English |
| Cody | Helpful.
| Male | English |
| Cooper | Barrel maker | Male | English |
| Courage | | Unisex | Hebrew |
| Dickens | | Unisex | Hebrew |
| Digger | One that digs. | Unisex | |
| Doonesbury | | Unisex | Hebrew |
| Duke | Highest ranking nobleman | Male | English |
| Dusty | Covered with dust, tinged with grey | Unisex | |