Cognomen ไพยรัตน์ (ไพยรัตน์ 
) , in all the world, is a rare family name. The family name ไพยรัตน์ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, ไพยรัตน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ไพยรัตน์ | Thailand |