Cognomen เพชรพิไล (เพชรพิไล 
, Petpilai , Petchpilai ) , all over the world, is an extremely rare family name. Much more frequently, เพชรพิไล is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Petpilai, เพชรพิไล, Pechpilai, Petchpilai | Thailand |