| Term | Full Form | Category |
|---|---|---|
| AY | Academic Year | Others |
| AY | Accident Year | Others |
| AY | Actual Yield | Others |
| AY | Advent Youth | Others |
| AY | Adventist Youth | Others |
| AY | African Yoruba | Others |
| AY | Aheiai Yaeao | Others |
| AY | All Year | Others |
| AY | All You | Others |
| AY | Angus Young | Others |
| AY | Anniversary Year | Others |
| AY | Annual Year | Others |
| AY | Antarctica AY | Others |
| AY | Ask Yourself | Others |
| AY | Assessment Year | Others |
| AY | Autobiography of a Yogi | Others |
| AY | Aymara | Others |