| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 1 | Afric | Celtic | Agreeable. | F | |
| 2 | Africa | Celtic | Agreeable. | F | |
| 3 | Aife | Celtic | A great warrior woman of myth. | F | |
| 4 | Aigneis | Celtic | Pure. | F | |
| 5 | Ailidh | Celtic | Kind. | F | |
| 6 | Ailis | Celtic | Noble. | F | |
| 7 | Aina | Celtic | Joy. | F | |
| 8 | Aine | Celtic | Fire or joy. | F | |
| 9 | Aingeal | Celtic | Angel. | F | |
| 10 | Airic | Celtic | Agreeable. | F | |
| 11 | Aithne | Celtic | Fire. | F | |
| 12 | Alana | Celtic | Feminine form of Alan meaning harmony, stone, or noble. | F | |
| 13 | Alane | Celtic | Fair. | F | |
| 14 | Alanna | Celtic | Feminine form of Alan meaning harmony, stone, noble, or fair. | F | |
| 15 | Alastrina | Celtic | Defends mankind. | F | |
| 16 | Alastrine | Celtic | Defends mankind. | F | |
| 17 | Alastriona | Celtic | Defends mankind. | F | |
| 18 | Aleen | Celtic | Fair, good-looking. Feminine of Allen or variant of Helen. | F | |
| 19 | Aleena | Celtic | Fair, good-looking. Feminine of Allen or variant of Helen. | F | |
| 20 | Alena | Celtic | Fair, good-looking. Feminine of Allen or variant of Helen. | F | |