- A. Kiliyanur
- Achalpuram
- Adanur
- Agara Kondagai
- Agasthiampalli
- Akkaraipettai
- Akkur (Nagapattinam)
- Alakkudi
- Alangudi
- Alangudichery
- Alathur
- Alaveli
- Aliyur
- Ambal
- Anaikaranchatram
- Anaikaranchatram South
- Anandatandavapuram
- Andakudi
- Andanapettai
- Annamperumalkoil
- Annapettai
- Anniyur
- Arangakudi
- Arapallam
- Arappakkam