| Name | Meaning | Gender | Origin |
|---|
| Barnaby | Son of comfort.
| Male | English |
| Barney | Comforter
| Male | English |
| Baron | A low ranking nobleman. | Male | English |
| Barrett | Bear-Like | Male | German |
| Bart | From the barley farm
| Male | English |
| Basel | King | Unisex | English |
| Bashful | Shy and self-conscious | Unisex | |
| Basil | Majestic, royal, brave | Male | Greek |
| Batman | | Unisex | Hebrew |
| Baxter | baker | Male | English |
| Bayou | A marshy creek. | Male | Nature |
| Bazooka | | Unisex | Hebrew |
| Beans | Seeds of a plant e.g.. coffee beans. Also energetic - "Full of beans". | Male | |
| Bear | Large mammal with large head, bulky body and coarse thick fur | Male | Animal |
| Beasley | | Unisex | Hebrew |
| Beau | Handsome.
| Male | |
| Beauregard | beautiful gaze | Male | |
| Beaver | after the tv show Leave It To Beaver | Unisex | |
| Beefcake | | Unisex | Hebrew |
| Beelzebub | Bee EL zah BUB | Unisex | |
| Beethoven | | Male | Hebrew |
| Belladonna | beautiful woman | Unisex | |
| Bengal | | Unisex | Hebrew |
| Benny | Blessed Son Of My Right Hand | Unisex | English |
| Bentley | from the moor, Farm where the grass bends | Male | English |