| Name | Meaning | Gender | Origin |
|---|
| Blotto | | Unisex | Hebrew |
| Blue | A colour between green and indigo. Gloomy or depressed. | Male | Color |
| Bluey | | Unisex | Hebrew |
| Bo | Nickname made popular by actress Bo Derek.
| Male | Norse |
| Bobby | bright fame | Male | English |
| Bobo | | Male | Hebrew |
| Bonza | | Unisex | Hebrew |
| Boomer | A large full grown kangaroo. A baby boomer. | Unisex | |
| Boots | | Male | Hebrew |
| Bootsie | Collins Pussycat | Unisex | |
| Boozer | Excessive alcoholic drinker | Unisex | |
| Bronson | son of Brown, son of the dark-skinned one | Male | English |
| Bruce | thicket, woodlands | Male | Scottish |
| Buddy | From Budd - The welcome messenger. | Male | English |
| Buddy | From Budd - The welcome messenger. | Male | English |
| Bundy | Bundy short for Australian Bundeberg Rum. | Unisex | |
| Burke | birch tree | Male | |
| Buster | One that breaks up something | Male | Modern |
| Butch | Masculine in appearance or manner. | Male | Nickname |
| Caesar | Title for Roman Emperors | Male | Latin |
| Camo | | Unisex | Hebrew |
| Casey | brave, watchful | Male | Irish |
| Casper | Master of the treasure | Male | Dutch |
| Charles | manly, strong | Male | |
| Charlie | a man: variant of Carl.
| Male | English |