| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 1 | Aberfa | Welsh | From the mouth of the river. | F | |
| 2 | Abertha | Welsh | Sacrifice. | F | |
| 3 | Adain | Welsh | Winged. | F | |
| 4 | Adara | Welsh | Catches birds. | F | |
| 5 | Addfwyn | Welsh | Meek. | F | |
| 6 | Addien | Welsh | Beautiful. | F | |
| 7 | Addiena | Welsh | Beautiful. | F | |
| 8 | Adenydd | Welsh | Winged. | F | |
| 9 | Adyna | Welsh | Wretched. | F | |
| 10 | Aelwyd | Welsh | From the hearth. | F | |
| 11 | Aledwen | Welsh | Feminine form of Aled: Offspring. | F | |
| 12 | Alys | Welsh | A form of the German Alice, meaning nobility. | F | |
| 13 | Amser | Welsh | Time. | F | |
| 14 | Aneira | Welsh | Feminine form of Aneurin: Uncertain origin, but may be derived from the Latin Honorius meaning man of honour, or from the Welsh eur meaning gold. | F | |
| 15 | Angharad | Welsh | Much loved. Used in 'Mahinogion,' a collection of medieval Welsh folk tales. The name of famous Welsh actress Angharad Rees. | F | |
| 16 | Anghard | Welsh | Loved greatly. | F | |
| 17 | Anwen | Welsh | Very beautiful'. | F | |
| 18 | Argel | Welsh | Refuge. | F | |
| 19 | ArgIwyddes | Welsh | Lady. | F | |
| 20 | Argoel | Welsh | Omen. | F | |