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