| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Allan | AL-ən | English, Scottish | ||
| Allen | AL-ən (English) | English, Scottish | ||
| Ally (2) | AL-ee | Scottish | ||
| Alpin | - | Scottish | ||
| Amhlaidh | - | Scottish | ||
| Angus | ANG-gəs | Scottish, Irish, English | ||
| Annag | - | Scottish | ||
| Aodh | EE, AY | Irish, Scottish, Irish Mythology | ||
| AodhÁN | - | Irish, Scottish, Irish Mythology | ||
| AodhagÁN | - | Irish, Scottish | ||
| Aonghas | - | Scottish | ||
| Aonghus | - | Irish, Scottish, Irish Mythology | ||
| Archibald | AHR-chə-bawld | Scottish, English | ||
| Archie | AHR-chee | Scottish, English | ||
| Arran | - | Scottish |