| NAME | ORIGIN | MEANING | B/G |
| Abboid | Gaelic | Abbey father. | Boy |
| Adair | Gaelic | noble, exalted, oak-tree ford | Boy |
| Adhamh | Gaelic | Gaelic form of Adam. | Boy |
| Afkica | Gaelic | Pleasant. | Girl |
| Aherin | Gaelic | Owns many horses. | Boy |
| Aherne | Gaelic | Owns many horses. | Boy |
| Aidan | Middle English, Gaelic | help, little fire | Boy |
| Aideen | Celtic/Gaelic | Flame | Girl |
| Aiden | Celtic/Gaelic | Fiery | Boy |
| Ailis | Celtic/Gaelic | Noble, Kind | Girl |
| Aimil | Gaelic | Gaelic form of Amelia. | Girl |
| Aindreas | Gaelic | Manly. | Boy |
| Aingealag | Gaelic | Angel. | Girl |
| Airdsgainne | Gaelic | From the height of the cliff. | Boy |
| Airell | Celtic/Gaelic | Nobelman | Girl |
| Airleas | Gaelic | Pledge. | Boy |
| Aislin | Celtic/Gaelic | Dream | Girl |
| Aisling | Celtic/Gaelic | Vision, Dream | Girl |
| Alai | Gaelic | Defender of man. | Boy |
| Alan | Gaelic, Celtic | handsome, cheerful, noble | Boy |
| Alana | Gaelic, Hawaiian | fair, beautiful, offering | Girl |
| Alasdair | Gaelic | A Scottish Gaelic variant of Alexander from the Greek meaning defender of man. | Boy |
| Alaster | Gaelic | Defender of man. | Boy |
| Alayne | Gaelic | Bright. | Girl |
| Alistair | Gaelic | A Scottish Gaelic variant of Alexander from the Greek meaning defender of man. | Boy |
| Alistaire | Gaelic | Variant of Alexander defender of mankind. | Boy |
| Alister | Gaelic | Variant of Alexander defender of mankind. | Boy |
| Allan | Celtic/Gaelic | Handsome | Boy |
| Allen | Celtic/Gaelic | Fair, handsome | Boy |
| Allene | Celtic/Gaelic | Attractive, Peaceful | Girl |