Cognomen ပြည် (Pyay 
, ပြည် ) , throughout the world, is a common family name. The surname ပြည် is characteristic of South-eastern Asia, particularly Myanmar, where it is quite a common surname, Singapore, where it is a rare surname, and Malaysia, where it is a very rare surname. Also, ပြည် is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pyay | Myanmar, Singapore, Indonesia, Mongolia, Malaysia |
| ပြည် | Myanmar |