AD
| Abbreviation | Meaning | Tamil Meaning | Category |
|---|---|---|---|
| AD | Alzheimer Disease | - | Computer Acronyms(common) |
| AD | Aperture Door | - | Organizations |
| AD | Adventure Diver (PADI) Advanced Diver (BSAC) | - | SMS Chat and Text |
| AD | Air Defence -Andorra (ISO 3166 Digram) -Anno Domini (Latin | - | Astronomy |