| # | Nombre | Orígen | Significado | Género | |
|---|---|---|---|---|---|
| 1 | Ab Owen | Gales | Hijo de Owen. | M | |
| 2 | Aberfa | Gales | De la boca del ro. | F | |
| 3 | Abertha | Gales | Sacrificio. | F | |
| 4 | Aberthol | Gales | Sacrificio. | M | |
| 5 | Adain | Gales | Winged. | F | |
| 6 | Adara | Gales | Catches birds. | F | |
| 7 | Adda | Gales | Gals form of Adam 'del red earth'. | M | |
| 8 | Addfwyn | Gales | Meek. | F | |
| 9 | Addien | Gales | Hermosa. | F | |
| 10 | Addiena | Gales | Hermosa. | F | |
| 11 | Addolgar | Gales | Devout. | M | |
| 12 | Adenydd | Gales | Winged. | F | |
| 13 | Adwr | Gales | Coward. | M | |
| 14 | Adyna | Gales | Wretched. | F | |
| 15 | Aedd | Gales | A king of Ireland. | M | |
| 16 | Aelwyd | Gales | From the hearth. | F | |
| 17 | Alawn | Gales | Harmony. | M | |
| 18 | Albanwr | Gales | From Scotland. | M | |
| 19 | Aled | Gales | Offspring. | M | |
| 20 | Aledwen | Gales | Feminine form of Aled: Offspring. | F | |