| Name | Meaning | Gender | Origin |
|---|
| Boo | | Male | Hebrew |
| Boo | | Male | Hebrew |
| Boo | | Male | Hebrew |
| Boo | | Male | Hebrew |
| Boom | | Unisex | Hebrew |
| Boom | | Unisex | Hebrew |
| Boy | A male child | Unisex | |
| Brad | English, wide meadow | Male | English |
| Bradley | broad meadow | Male | English |
| Brendan | prince | Male | Irish |
| Brett | a native of Brittany, Briton | Male | Celtic |
| Brewer | | Unisex | Hebrew |
| Brian | strong | Male | Irish |
| Brit | Of Bretagne, France | Unisex | Irish |
| Brooks | of the brook | Male | English |
| Brown | colour | Male | Color |
| Bruce | thicket, woodlands | Male | Scottish |
| Bruno | Brown
| Male | |
| Bruno | Brown
| Male | |
| Bryan | strong, virtuous, and honorable | Male | English |
| 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 |
| Burke | birch tree | Male | |