AYY

AYY may refer to:


 * 'Ayy, a district in Karak Governorate, Jordan
 * Aalto University Student Union (Aalto-yliopiston ylioppilaskunta), Espoo, Finland
 * Arugam Bay Seaplane Base (IATA: AYY), Pottuvil, Sri Lanka
 * The code for Ayeyarwady Region in vehicle registration plates of Myanmar
 * A common prefix for a demi unit load device
 * ISO 639:ayy, a spurious ISO 639-3 code for the purported Tayabas Ayta language