AY
- ay – (s) Aymara language (ISO 639-1 code)
- AY – (s) Antarctica (FIPS 10-4 territory code)
- AYBABTU – (i) All Your Base Are Belong To Us
- aym – (s) Aymara language (ISO 639-2 code)
- AYU – (i) As Yet Unknown
Read more about this topic: List Of Acronyms And Initialisms: A