| Name | Meaning | Gender | Origin |
|---|
| Bedivere | Mythical Round Table Knight | Unisex | Welsh |
| Bedwyr | Arthurian legend name
| Male | |
| Benito | after Benito Mussolini | Unisex | |
| Bilbo | | Unisex | Hebrew |
| Blue | A colour between green and indigo. Gloomy or depressed. | Male | Color |
| Bobby | bright fame | Male | English |
| Boo | | Male | Hebrew |
| Boo | | Male | Hebrew |
| Boo | | Male | Hebrew |
| Boo | | Male | Hebrew |
| Brett | a native of Brittany, Briton | Male | Celtic |
| Brick | Speckled | Male | Celtic |
| Bruno | Brown
| Male | |
| Bruno | Brown
| Male | |
| Bryce | Son of a nobleman
| Male | English |
| Buck | A fleet footed youth. Male deer. | Male | English |
| Byron | after Lord Byron | Male | English |
| Caddy | Luminescent, Glowing, Shining | Unisex | Latin |
| Cade | barrel | Male | English |
| Caliban | black | Male | Romanian |
| Calpurnia | | Unisex | Hebrew |
| Calvin | Bald | Male | Latin |
| Cash | hollow | Male | Word |
| Caspar | keeper of the treasure | Male | Persian |
| Caspian | from C.S. Lewis The Chronicles of Narnia | Male | Place |