| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 1 | Abhainn | Scottish | River. | M | |
| 2 | Acair | Scottish | Anchor. | M | |
| 3 | Acaiseid | Scottish | Anchor. | M | |
| 4 | Achaius | Scottish | Friend of a horse. | M | |
| 5 | Adair | Scottish | From the oak tree ford. Uncertain origin. May be a variant of Edgar, or from the Gaelic for 'oak tree ford'. Used for many hundreds of years as both surname and first name. | M | |
| 6 | Adhamh | Scottish | Of the earth. | M | |
| 7 | Aengus | Scottish | Unnaturally strong. | M | |
| 8 | Aibne | Scottish | River. | M | |
| 9 | Ail | Scottish | From the stony place. | M | |
| 10 | Ailbert | Scottish | Noble. | M | |
| 11 | Ailean | Scottish | Handsome. | M | |
| 12 | Ailein | Scottish | From the green meadow. | M | |
| 13 | Aillig | Scottish | From the stony place. | M | |
| 14 | Aindreas | Scottish | Strong. | M | |
| 15 | Akir | Scottish | Anchor. | M | |
| 16 | Alasdair | Scottish | Variant of Alexander 'defender of mankind.'. | M | |
| 17 | Alastair | Scottish | Defender of man. | M | |
| 18 | Albany | Scottish | Derived from a former name for northern Scotland. | M | |
| 19 | Alec | Scottish | Abbreviation of Alexander 'defender of mankind.'. | M | |
| 20 | Aleck | Scottish | Abbreviation of Alexander 'defender of mankind.'. | M | |