Cognomen Phunyayuean (Phunyayuean 
) , in all the world, is a very rare surname. The cognomen Phunyayuean is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Phunyayuean | Thailand |
Siwaphan, and Rueangsirin