| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 41 | Arlene | Celtic | An oath. | F | |
| 42 | Arleta | Celtic | An oath. | F | |
| 43 | Arlette | Celtic | An oath. | F | |
| 44 | Arlina | Celtic | An oath. | F | |
| 45 | Arline | Celtic | An oath. | F | |
| 46 | Beatha | Celtic | Life. | F | |
| 47 | Bedelia | Celtic | A variant of Bridget, who was the mythic Celtic goddess of fire and poetry. | F | |
| 48 | Berit | Celtic | Splendid. | F | |
| 49 | Berta | Celtic | Splendid. | F | |
| 50 | Betha | Celtic | Life. | F | |
| 51 | Birgit | Celtic | Splendid or strong. | F | |
| 52 | Birkita | Celtic | Strong. | F | |
| 53 | Birte | Celtic | Splendid. | F | |
| 54 | Blair | Celtic | From the plain lands. | F | |
| 55 | Brangaine | Celtic | Character from Isolde legend. | F | |
| 56 | Branwen | Celtic | Sister of Bendigeidfran. | F | |
| 57 | Breeda | Celtic | Strong. | F | |
| 58 | Brenna | Celtic | Raven. | F | |
| 59 | Bret | Celtic | From Britain. | F | |
| 60 | Bretta | Celtic | From Britain. | F | |