Family name ถาวรวงศ์เพชร (ถาวรวงศ์เพชร 
) , in the entire world, is an extremely rare cognomen. The last name ถาวรวงศ์เพชร is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| ถาวรวงศ์เพชร | Thailand |