Family name เถาวัลย์เพชร (เถาวัลย์เพชร 
) , across the world, is an extremely rare surname. The surname เถาวัลย์เพชร is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| เถาวัลย์เพชร | Thailand |