Family name Wiriyasuwan (Wiriyasuwan 
) , in the world, is a very rare cognomen. The cognomen Wiriyasuwan is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Wiriyasuwan | Thailand |
Nada, Fareeya, Natthacha, and Nuttaphong