>
Family name Ratphithak (Ratphithak ) , in all the world, is a very rare cognomen. The cognomen Ratphithak is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ratphithak | Thailand |
Kanda, Mariam, Janjira, and Nirattisai