Family name ไอย (Aiya 
, ไอย ) , in the entire world, is quite a common last name. The family name ไอย is characteristic of Sri Lanka, where it is quite a rare surname, Qatar, and Kuwait, where it is a rare surname. Measured by absolute frequency, it is the most numerous in India, Sri Lanka, and Indonesia. More prevalently, ไอย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Aiya | Thailand, India, Indonesia, Sri Lanka, Nigeria |
| ไอย | Thailand |