| Code | Name | Region |
|---|---|---|
| INARI | Ariyalur | TN |
| INANL | Arnala | MH |
| INARR | Aroor | KL |
| INPNV | Arshiya International Ltd.-sez/panvel | MH |
| INDAR | Artha Sez/greater Noida | UP |
| INSPE | Asdipl-sez/nellore | AP |
| INASL | Aslali | GJ |
| INATT | Attari | PB |
| INATR | Attari Road | PB |
| INATU | Attur | TN |
| INAUR | Auraiya | UP |
| INIXU | Aurangabad | |
| INACT | Ambala Cantonment | HR |
| INAMR | Ambatturai (ambathurai) | TN |
| INABN | Ambernath | |
| INAMT | Amethi | UP |
| INAMG | Amingaon (gauhati) | AS |
| INAIS | Amini Island | LD |
| INATQ | Amritsar | PB |
| INNNN | Amrlitcl-sez/nanguneri | TN |
| INANA | Ana | RJ |
| INQNB | Anand | GJ |
| INASH | Anandpur Sahib | PB |
| INAPH | Anantapur | AP |
| INAPT | Anaparti | AP |
| INADE | Andheri East | MH |
| INAMI | Andorth Is | LD |
| INADI | Androth Is | LD |
| INANO | Angul | OR |
| INANG | Anijengo | KL |
| INAKV | Ankleshwar | GJ |
| INANU | Anuppur | MP |
| INAGR | Agra | UP |
| INAGA | Agucha | RJ |
| INAMD | Ahmedabad | GJ |
| INMUM | Ahmednagar | MH |
| INBPS | Air Parcel Sorting Office/mumbai | MH |
| INAJL | Aizawl | |
| INAJI | Ajmer | RJ |
| INAKD | Akola | |
| INALA | Alang Sby | |
| INAGU | Alangulam | TN |
| INABG | Alibag | MH |
| INALG | Aligarh | UP |
| INAPR | Alipore | WB |
| INALI | Alirajpur | MP |
| INIXD | Allahabad | |
| INALF | Alleppey | KL |
| INIXV | Along Apt | AR |
| INALP | Alpl Cfs/dadri | UP |