Last name อัย (Ai 
, Aiya 
, อัย 
) , all around the world, is a widespread cognomen. The cognomen อัย is characteristic of Malaysia, where it is quite a common surname, Macao, and China (explore the name in all countries). Not in comparison with a country's population, this name is the most popular in China, Malaysia, and India. Also, อัย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ai | India, China, Japan, Indonesia, Myanmar |
| Aiya | India, China, United States, Malaysia, Indonesia |
| อัย | Thailand |