Last name Ratwittayakorn (Ratwittayakorn 
) , in all the world, is an extremely rare family name. The cognomen Ratwittayakorn is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ratwittayakorn | Thailand |
Aumporn, and Napattrarat