Surname ช่างเพชร (ช่างเพชร, Changphet 
, Changpetch 
) , around the globe, is a rare family name. The cognomen ช่างเพชร is habitual in Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Changphet | Thailand |
| Changpetch | United States, Thailand |