| Arlais | Woman | Welsh Names |
| Arthur | Man | Welsh Names |
| Avalon | Unisex | Welsh Names |
| Avon | Unisex | Welsh Names |
| Awen | Woman | Welsh Names |
| Awena | Woman | Welsh Names |
| Baeddan | Man | Welsh Names |
| Bedwyr | Man | Welsh Names |
| Bethan | Woman | Welsh Names |
| Bethwyn | Woman | Welsh Names |
| Betrys | Woman | Welsh Names |
| Bevan | Man | Welsh Names |
| Beynon | Man | Welsh Names |
| Blodwyn | Woman | Welsh Names |
| Bowen | Man | Welsh Names |
| Braith | Woman | Welsh Names |
| Bran | Man | Welsh Names |
| Branwen | Woman | Welsh Names |
| Briallen | Woman | Welsh Names |
| Bricen | Unisex | Welsh Names |