Surname Ounsungnuen (Ounsungnuen 
) , around the world, is a very rare last name. The cognomen Ounsungnuen is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ounsungnuen | Thailand |
Sumrueng, Kanyanat, Kittikarn, Klinkularb, and Pongsathorn