- Ahenny
- Aherla
- Aherlabeg
- Ahgmore Bridge
- Ahildoua
- Ahimma
- Ahnagh Bridge
- Ahnagh Cross
- Ahqunboy
- Aillemore
- Aillroe More
- Air Hill
- Aishanboe
- Aldworth’s Bridge
- Allen’s Bridge
- Allihies
- Almaseed Bridge
- An Ghlaise Bheag
- Anablaha
- Anascaul
- Anghvaneen
- Anglesborough
- Anglesey Road
- Anglesry Bridge
- Annaboty
- Annacarriga
- Annacarty
- Annacotty
- Annagap
- Annagh