Surname ดรรชนีเพชร (ดรรชนีเพชร 
) , all around the world, is an extremely rare family name. The cognomen ดรรชนีเพชร is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| ดรรชนีเพชร | Thailand |