| # | Navn | Oprindelse | Betydning | Køn | Gem |
|---|---|---|---|---|---|
| 1 | Abboid | Gaelic | Abbey father. | M | |
| 2 | Adair | Gaelic | From the oak tree ford. | M | |
| 3 | Adhamh | Gaelic | Gaelic form of Adam. | M | |
| 4 | Afkica | Gaelic | Pleasant. | F | |
| 5 | Africa | Gaelic | Pleasant. | F | |
| 6 | Aherin | Gaelic | Owns many horses. | M | |
| 7 | Ahern | Gaelic | Owns many horses. | M | |
| 8 | Aherne | Gaelic | Owns many horses. | M | |
| 9 | Aidan | Gaelic | Little fire, ardent. Aidan was popular in Ireland in the 7th century after the famous Irish monk Aidan, and was revived in the early 19th century. | M | |
| 10 | Aiden | Gaelic | Fiery. | M | |
| 11 | Aigneis | Gaelic | Gaelic forms of Agnes. | F | |
| 12 | Ailean | Gaelic | Handsome. | M | |
| 13 | Ailen | Gaelic | Handsome. | M | |
| 14 | Ailie | Gaelic | Diminutive of Ailis: The Scottish Gaelic form of Alice. | F | |
| 15 | Ailin | Gaelic | Handsome. | M | |
| 16 | Ailis | Gaelic | The Scottish Gaelic form of Alice. | F | |
| 17 | Aimil | Gaelic | Gaelic form of Amelia. | F | |
| 18 | Aindreas | Gaelic | Manly. | M | |
| 19 | Aingealag | Gaelic | Angel. | F | |
| 20 | Airdsgainne | Gaelic | From the height of the cliff. | M | |