All over the world, พัย (Phai 
, พัย ) is quite a rare unisex first name. The given name พัย is characteristic of Vietnam, where it is a rare primarily boy's, but very seldom girly name, India, where it is a very rare gender-neutral name, and South Africa. Not in comparison with a country's population, this name is the most popular in India, Vietnam, and the United States. Likewise, พัย is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Phai | Laos, Myanmar, Vietnam, India, Thailand |
| พัย | Thailand |