Family name Ruenpakdan (Ruenpakdan 
) , throughout the world, is a very rare last name. The cognomen Ruenpakdan is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ruenpakdan | Thailand |
Pichaya, Rawipol, Duangrat, Sittichai, and Chitsanupong