Surname วรรณเพชร (วรรณเพชร 
, Wanphet , Waannapet ) , worldwide, is a rare family name. The cognomen วรรณเพชร is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Waannapet, วรรณเพชร, Wanphet, Wannapet | Thailand |
Wannapetch, Wannaphet, Wanpetch, Wanpetcha, Wanphetr, Wanyapetch, and Whanphet