Surname พิลัยไชยกุล (พิลัยไชยกุล 
) , throughout the world, is an extremely rare family name. The family name พิลัยไชยกุล is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| พิลัยไชยกุล | Thailand |