Surname Orunruk (Orunruk 
) , in all the world, is a very rare last name. The last name Orunruk is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Orunruk | Thailand |
Sarayut, Nussara, and Umaporn Sutthikhun