Cognomen Prachnakorn (Prachnakorn 
) , throughout the world, is a very rare family name. The cognomen Prachnakorn is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Prachnakorn | Thailand |
Naphat, Tharada, Jaruchat, Natdanai, Panitavadee, and Surachanee