- Ardara
- Aghabog
- Aghadreenagh
- Aghakinnigh
- Aghalackan
- Aghalenty
- Aghalough
- Aghamackalinn
- Aghangaddy
- Aghaveagh
- Aghlattacru
- Aghlaverty
- Aghlem Bridge
- Aghnafarcan
- Aghnagap
- Aghnamullen
- Aighe
- Alkill
- Allagesh
- Allagh Island
- Alt Lower
- Alt Upper
- Altadoo
- Altadush
- Altahalla
- Altateskin
- Altnagapple
- Altnapaste
- Altshallan
- Annagary