| Gaelic baby names begining from A |
| Abboid |
 | Abbey father. |
| Adair |
 | From the oak tree ford. |
| Adhamh |
 | Gaelic form of Adam. |
| Afkica |
 | Pleasant. |
| Africa |
 | Pleasant. |
| Aherin |
 | Owns many horses. |
| Ahern |
 | Owns many horses. |
| Aherne |
 | Owns many horses. |
| Aidan |
 | 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. |
| Aiden |
 | Fiery. |
| Aigneis |
 | Gaelic forms of Agnes. |
| Ailean |
 | Handsome. |
| Ailen |
 | Handsome. |
| Ailie |
 | Diminutive of Ailis: The Scottish Gaelic form of Alice. |
| Ailin |
 | Handsome. |
| Ailis |
 | The Scottish Gaelic form of Alice. |
| Aimil |
 | Gaelic form of Amelia. |
| Aindreas |
 | Manly. |
| Aingealag |
 | Angel. |
| Airdsgainne |
 | From the height of the cliff. |
| Airleas |
 | Oath. |
| Airleas |
 | Pledge. |
| Al |
 | Diminutive of Alistair: A Scottish Gaelic variant of Alexander from the Greek meaning defender of man. |
| Alai |
 | Defender of man. |
| Alain |
 | Bright. |
| Alana |
 | This name of uncertain origin may be a feminine form of Man, or derived from the Irish Gaelic word for 'child'. |
| Alanna |
 | This name of uncertain origin may be a feminine form of Man, or derived from the Irish Gaelic word for 'child'. |
| Alasdair |
 | A Scottish Gaelic variant of Alexander from the Greek meaning defender of man. |
| Alastair |
 | Variant of Alexander defender of mankind. |
| Alaster |
 | Defender of man. |
| Alayne |
 | Bright. |
| Alina |
 | Bright. |
| Alistair |
 | A Scottish Gaelic variant of Alexander from the Greek meaning defender of man. |
| Alistaire |
 | Variant of Alexander defender of mankind. |
| Alister |
 | Variant of Alexander defender of mankind. |
| Allene |
 | Bright. |
| Allie |
 | Diminutive of Alistair: A Scottish Gaelic variant of Alexander from the Greek meaning defender of man. |
| Allister |
 | Defender of man. |
| Ally |
 | Diminutive of Alistair: A Scottish Gaelic variant of Alexander from the Greek meaning defender of man. |
| Allyn |
 | Bright. |
| Alroy |
 | Red haired. |
| Amber |
 | Fierce. |
| Amhuinn |
 | Lives at the alder tree river. |
| Anabal |
 | Joy. |
| Angus |
 | Superior strength. |
| Annabel |
 | Joy. |
| Annabella |
 | Joy. |
| Annabelle |
 | Joy. |
| Aodh |
 | Spirit. |
| Aodhagan |
 | Ardent. |
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