AAY may refer to:
- Aariya language, an apparently spurious language of India
- Aay (film), a 2024 Indian Telugu-language romantic comedy film written and directed by Anji K. Maniputhra
- Al Ghaydah Airport in Al Ghaydah, Yemen (IATA airport code)
- Allegiant Air, an airline headquartered in Las Vegas, Nevada, United States (ICAO airline designator)
- Down East Yachts, an American sailboat manufacturer