| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 21 | Andras | Welsh | Manly; brave. Variant of English Andrew. | M | |
| 22 | Andreas | Welsh | Welsh form of Andrew 'manly'. | M | |
| 23 | Aneirin | Welsh | Uncertain origin, but may be derived from the Latin Honorius meaning man of honour, or from the Welsh eur meaning gold. | M | |
| 24 | Aneurin | Welsh | Uncertain origin, but may be derived from the Latin Honorius meaning man of honour, or from the Welsh eur meaning gold. | M | |
| 25 | Anfri | Welsh | Disgrace. | M | |
| 26 | Angawdd | Welsh | Legendary son of Caw. | M | |
| 27 | Anghrist | Welsh | Antichrist. | M | |
| 28 | Angor | Welsh | Anchor. | M | |
| 29 | Anwar | Welsh | Wild. | M | |
| 30 | Anwas | Welsh | Legendary father of Twrch. | M | |
| 31 | Anwell | Welsh | Beloved. | M | |
| 32 | Anwil | Welsh | Beloved. | M | |
| 33 | Anwill | Welsh | Beloved. | M | |
| 34 | Anwir | Welsh | Liar. | M | |
| 35 | Anwyl | Welsh | Beloved. | M | |
| 36 | Anwyll | Welsh | Beloved. | M | |
| 37 | Anynnawg | Welsh | Legendary son of Menw. | M | |
| 38 | Anyon | Welsh | Anvil. | M | |
| 39 | Ap Evan | Welsh | Son of Evan. | M | |
| 40 | Ap Harry | Welsh | Son of Harry. | M | |