| Adda | Man | Welsh Names |
| Addien | Woman | Welsh Names |
| Aderyn | Woman | Welsh Names |
| Adwen | Woman | Welsh Names |
| Aelwen | Woman | Welsh Names |
| Aeres | Woman | Welsh Names |
| Aerfen | Woman | Welsh Names |
| Aeron | Man | Welsh Names |
| Aerona | Woman | Welsh Names |
| Aeronwen | Woman | Welsh Names |
| Aethwy | Woman | Welsh Names |
| Afanen | Woman | Welsh Names |
| Afon | Unisex | Welsh Names |
| Aled | Man | Welsh Names |
| Amser | Woman | Welsh Names |
| Anchoret | Woman | Welsh Names |
| Angharad | Woman | Welsh Names |
| Anwen | Woman | Welsh Names |
| Arawn | Man | Welsh Names |
| Arianwen | Woman | Welsh Names |